Relevant bibliographies by topics / Openseespy

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Openseespy'

Author: Grafiati
Published: 9 March 2023
Last updated: 10 March 2023

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Openseespy.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Openseespy"

1

Zhu, Minjie, Frank McKenna, and Michael H. Scott. "OpenSeesPy: Python library for the OpenSees finite element framework." SoftwareX 7 (January 2018): 6–11. http://dx.doi.org/10.1016/j.softx.2017.10.009.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Ngan, J. W., and C. C. Caprani. "ospgrillage: A bridge deck grillage analysis preprocessor for OpenSeesPy." Journal of Open Source Software 7, no. 77 (September 5, 2022): 4404. http://dx.doi.org/10.21105/joss.04404.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Guo, Junjun, Aijun Ye, Xiaowei Wang, and Zhongguo Guan. "OpenSeesPyView: Python programming-based visualization and post-processing tool for OpenSeesPy." SoftwareX 21 (February 2023): 101278. http://dx.doi.org/10.1016/j.softx.2022.101278.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Xiao, Yanjie, Xun’an Zhang, Feng Yue, Muhammad Moman Shahzad, Xinwei Wang, and Buqiao Fan. "Seismic Fragility Analysis of Mega-Frame with Vibration Control Substructure Based on Dual Surrogate Model and Active Learning." Buildings 12, no. 6 (June 1, 2022): 752. http://dx.doi.org/10.3390/buildings12060752.

Full text
Abstract:
Seismic fragility analysis of a mega-frame with vibration control substructure (MFVCS) considering structural uncertainties is computationally expensive. Dual surrogate model (DSM) can be used to improve computational efficiency, whereas the proper selection of design of experiments (DoE) is a difficult work in the DSM-based seismic fragility analysis (DSM-SFA) method. To efficiently assess the seismic fragility with sufficient accuracy, this paper proposes an improved DSM-SFA method based on active learning (AL). In this method, the Kriging model is employed for surrogate modeling to obtain the predicted error of approximation. An AL sampling strategy is presented to update the DoE adaptively, and the refinement of the surrogate models can reduce the error of the probability result computed by the Monte Carlo (MC) simulation. A numerical example was studied to verify the effectiveness and feasibility of the improved procedure. This method was applied to the fragility analysis of an MFVCS and a mega-frame structure (MFS). The finite element models were established using OpenSeesPy and SAP2000 software, respectively, and the correctness of the MFVCS model was verified. The results show that MFVCS is less vulnerable than MFS and has better seismic performance.
APA, Harvard, Vancouver, ISO, and other styles
5

Chigullapally, Pavan, Lucas Hogan, Liam Wotherspoon, Max Stephens, and Michael Pender. "Experimental and numerical analysis of the lateral response of full-scale bridge piers." Bulletin of the New Zealand Society for Earthquake Engineering 55, no. 2 (May 31, 2022): 95–111. http://dx.doi.org/10.5459/bnzsee.55.2.95-111.

Full text
Abstract:
This paper presents the results of in-situ testing of two integrated pile-columns of a partially demolished bridge located in Auckland, New Zealand. A series of tests involving lateral monotonic pushover and subsequent dynamic free vibration snapback tests were used to quantify the variation in the stiffness and damping behaviour of the pile-column specimens over a range of lateral load levels. Each testing sequence consisted of incrementally increasing peak monotonic loads followed by the dynamic snapback, with a series of varying peak loads at the end of the testing sequence to evaluate the influence of loading history on the monotonic and dynamic response. The secant stiffness between the monotonic pushover tests performed to the same loading levels before and after the maximum load was applied, reduced by up to 40% in both the pile-columns, primarily due to soil gapping effects, highlighting the significant potential softening of the system prior to pile or column yielding. Progressive reduction in the damping of the system during each snapback test was evident, due to the varying contributions of different energy dissipation mechanisms, and the level of damping varied depending on the peak load applied. These results highlighted the significant influence of soil gapping and nonlinearity on the dynamic response of the system. Numerical models were developed in the open source structural analysis software OpenSeesPy using a Nonlinear Beam on Winkler Foundation approach to further investigate the response of the pile-columns. Models of both the pile-columns using existing p-y curves for clay soils showed good agreement with the experimental data in load-displacement, period and snapback acceleration time histories. Sensitivity analysis showed that the surface soft clay layer had a significant effect on the lateral response and dynamic characteristics of the model, reinforcing the need for good characterisation of the near surface soil profile to capture the behaviour of the system.
APA, Harvard, Vancouver, ISO, and other styles
6

Gao, Yi Chao, Feng Jin, Yan Jie Xu, and Jian Yang. "Development of Pre-Processor for OpenSees Based on Patran Command Language." Applied Mechanics and Materials 409-410 (September 2013): 1615–19. http://dx.doi.org/10.4028/www.scientific.net/amm.409-410.1615.

Full text
Abstract:
OpenSees is an object-oriented open-source finite element software platform suitable for advanced simulation of structural and geotechnical systems. Lacking of powerful pre-processor, the preparing of input scripts for OpenSees is time consuming and error-prone for large and complex models. Patran is an excellent pre-processing commercial package for finite element analysis and offers the powerful Patran Command Language (PCL) for user customization. Taking the advantage of Patran in finite element pre-processing, the finite element modeling is done in Patran and the input script for OpenSees is generated by PCL. It is an alternative approach to efficient pre-processing for OpenSees.
APA, Harvard, Vancouver, ISO, and other styles
7

Jiang, Jian, Guo-Qiang Li, and Asif Usmani. "Analysis of Composite Steel-concrete Beams Exposed to Fire using OpenSees." Journal of Structural Fire Engineering 6, no. 1 (February 17, 2015): 1–20. http://dx.doi.org/10.1260/2040-2317.6.1.1.

Full text
Abstract:
OpenSees is an open-source object-oriented software framework developed at UC Berekeley. The OpenSees framework has been recently extended to deal with structural behaviour under fire conditions. This paper summaries the key work done for this extension and focuses on the validation and application of the developed OpenSees to study the behaviour of composite steel-concrete beams under fire conditions. The performance of the developed OpenSees are verified by four mechanical tests and two fire tests on simply supported composite beams. A parametric study is carried out using OpenSees to study the influence of boundary condition as well as composite effect of slab on the behavior of composite beams exposed to fire. The stress and strain along the beam section is output and compared with yield stress limit at elevated temperature to explain these influences in detail. The results show that the stress distribution in the web of the steel beam is more complex due to the support effects.
APA, Harvard, Vancouver, ISO, and other styles
8

Usmani, Asif, Jian Zhang, Jian Jiang, Yaqiang Jiang, and Ian May. "Using Opensees for Structures in Fire." Journal of Structural Fire Engineering 3, no. 1 (March 2012): 57–70. http://dx.doi.org/10.1260/2040-2317.3.1.57.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Hasibuan, Samsul A. Rahman Sidik, Yoyong Arfiadi, and Junaedi Utomo. "Nonlinear Time History Analysis of Flat Slab Structure With OpenSees Navigator." MEDIA KOMUNIKASI TEKNIK SIPIL 28, no. 1 (July 29, 2022): 59–66. http://dx.doi.org/10.14710/mkts.v28i1.38184.

Full text
Abstract:
Structural systems that do not use a beam as the main component were first developed by Turner in 1906. This structural system is better known as a flat slab. The flat slab structure is supported by column heads and drop panels, or without drop panels, or without column heads. Several building codes such as IS 456: 2000, ACI 318-08, ACI 318-19, EC 2:2004, and NZS 3101 (Part 1):2006 provide guidance for designing flat slab systems under gravity loads only. However, many flat slab buildings are also built in areas with high earthquakes which can cause the collapse of buildings due to earthquake loads. In this paper the 10-level flat slab building structure design results are analyzed using nonlinear time history response analysis with the help of OpenSees Navigator software using several earthquake records, namely Kobe (Japan, 1995), Imperial Valley (California, 1979) and Tabas (Iran, 1978) which has been adjusted to the design spectra of the city of Yogyakarta. From the results of the analysis using OpenSees Navigator, it was found that the story drift that occurred was still within the limits required in the regulations, so that the building being reviewed was still within the limits of life safety design.
APA, Harvard, Vancouver, ISO, and other styles
10

A. Mordini and H. Wenzel. "Damage detection on beam structures by means of VCUPDATE." Electronic Journal of Structural Engineering 10 (January 1, 2010): 11–21. http://dx.doi.org/10.56748/ejse.10121.

Full text
Abstract:
One of the most promising computational methods in the field of Structural Health Monitoring is the Finite Element Model Updating. The VCUPDATE solution presented in this work is a Scilab code performing the iterative updating algorithm interfaced with a Finite Element code (OpenSees or ANSYS) executing the numerical analysis. The code is applied to the damage detection on beam structures. At first, a simple case numerically generated by OpenSees is investigated. Subsequently, using experimental test data, the code is applied to a real structure by using OpenSees as well as ANSYS.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Openseespy"

1

ODDO, Maria Concetta. "Advances in experimental characterization and modelling of FRCM composites for structural retrofitting." Doctoral thesis, Università degli Studi di Palermo, 2023. https://hdl.handle.net/10447/579121.

Full text
Abstract:
Questa tesi presenta i risultati di una campagna sperimentale incentrata sulla caratterizzazione della trazione dei basalt e glass FRCM e della caratterizzazione del legame di aderenza composito-Calcarenite. Il lavoro sperimentale è completato dalla proposta di due modelli numerici sia per prove di trazione che per quelle di aderenza. L'indagine sperimentale è stata condotta considerando l'influenza di diversi rinforzi, matrici e metodi di prova. I risultati sperimentali consentono di valutare l'effetto della malta sulle curve sforzo-deformazione, la resistenza, la duttilità e le modalità di crisi. Inoltre, la tesi fornisce un importante contributo per valutare l'influenza di diversi metodi di prova (es. clamping e clevis come riportato da diversi standard e linee guida) sulle prestazioni dei sistemi FRCM testati a trazione. Inoltre, la correlazione dell'immagine digitale è stata utilizzata per misurare le tensioni di trazione e per analizzare le modalità di crisi offrendo una caratterizzazione meccanica accurata. L'elemento di principale novità è l'adozione di un set-up per le prove di aderenza modificato e progettato per analizzare l'influenza della dimensione del composito sulla lunghezza e la resistenza del legame. Un'analisi approfondita dei risultati conferma l'efficacia di questo innovativo set-up. Infine, vengono presentati due modelli numerici che tentano di fornire un semplice strumento numerico per valutare il comportamento costitutivo dei sistemi FRCM. I modelli sono stati calibrati sulla base delle curve sperimentali sforzo-deformazione e carico-slittamento dimostrando di essere uno strumento efficace per prevedere il comportamento meccanico dei materiali compositi FRCM.
This thesis presents the results of an experimental campaign focused on the tensile characterization of basalt and glass FRCM and composite-calcarenite bond characterization. The experimental work is complemented by the proposal of two numerical models both for tensile and bond tests. The experimental investigation was carried out considering the influence of different reinforcements, matrices and testing methods. Experimental results provide for assessing the effect of mortar grade on the stress-strain curves, strength, ductility and failure modes. Moreover, the thesis provides an important contribution to assess the influence of different testing methods (i.e. clamping and clevis as reported by different standard and guidelines) on the performance of the FRCM systems tested in tension. Moreover, the Digital image correlation was used to measure the tensile strains and to analyse the failure modes offering an accurate mechanical characterization. The main element of novelty is the adoption of a modified bond test set-up designed to analyse the influence of the composite size on bond length and strength. A deep analysis of the results confirms the effectiveness of this innovative set-up. Finally, two numerical models are presented attempt at providing a simple numerical tool for capturing the constitutive behaviour of the FRCM systems. The models were calibrated on the basis of the experimental stress-strain and load-slip curves showing to be an effective tool for predicting the mechanical behaviour of the FRCM composites.
APA, Harvard, Vancouver, ISO, and other styles
2

Jiang, Jian. "Nonlinear thermomechanical analysis of structures using OpenSees." Thesis, University of Edinburgh, 2013. http://hdl.handle.net/1842/7749.

Full text
Abstract:
The behaviour of heated structures is strongly governed by thermal induced deformation and degradation of material properties. This thesis presents an augmentation of the software framework OpenSees to enable thermomechanical analysis of structures. The developments contributed to OpenSees are tested by series of benchmark cases and experimental results. OpenSees is an object-oriented, open source software framework developed at UC Berekeley for providing an advanced computational tool to simulate non-linear response of structural frames to earthquakes. OpenSees was chosen to be extended to enable the modelling of structures in fire. The development of this capability involved creating new thermal load classes to define the temperature distribution in structural members and modifying existing material classes to include temperature dependent properties according to Eurocodes. New functions were also added into the existing corotational beam/column element (2D and 3D) to apply temperature related loads. A new geometrically nonlinear shell element was created (based on the existing linear MITC4 shell element in OpenSees) using total Lagrangian formulation. Appropriate thermal load, material and section classes were also developed for enabling thermomechanical analysis using the nonlinear shell element. A number of benchmark tests were carried out to verify the performance of the new developments implemented in OpenSees. The benchmark tests involved subjecting beams and plates to a range of through depth temperature gradients with OpenSees results compared against closed form solutions. Further verification was also carried out by comparing OpenSees results with ABAQUS results. The extended OpenSees framework was also used to model experiments such as two plane steel frames at elevated temperatures, the Cardington Restrained Beam Test and the Cardington Corner Test and an earthquake damaged reinforced concrete (RC) frame subjected to a subsequent fire. The existing DruckerPrager material class in OpenSees was used to the model concrete in the composite floor in the Cardington tests and in the RC frame. The pinching material available in OpenSees was used to model the beams and columns in the RC frame to consider the cyclic degradation of strength and stiffness during the increasing cyclic displacements imposed on the RC frame before the fire. In all cases the results from OpenSees show good agreement with test data.
APA, Harvard, Vancouver, ISO, and other styles
3

Zhang, Jian. "Developing OpenSees software framework for modelling structures in fire." Thesis, Heriot-Watt University, 2014. http://hdl.handle.net/10399/2863.

Full text
Abstract:
Fire following an earthquake (FFE) is a hazard that is not usually accounted for in either earthquake or fire resistant design of structures. There have however been many instances in the past of FFE events causing even greater damage and even loss of life than the original earthquake. The potential damage associate with this hazard is increasing considerably with increasing urbanisation in seismically vulnerable regions. It is reasonable for users to expect that structures should maintain their integrity for a long enough period in an FFE event allowing emergency crews to assist the most vulnerable occupants to evacuate the building safely. Because of the lack of regulatory requirements there is naturally very little research on the response of structural frames under FFE events so far, but given the reasons discussed earlier, it is clearly a matter of increasing importance that engineers should develop a better understanding of the behaviour of seismically damaged structural frames in fire. This thesis project was fortunate to have occurred at a time when a set of full-scale fire tests were taking place at IIT Roorkee in India, in collaboration with the University of Edinburgh to address exactly this topic. This thesis research was undertaken to model these experiments (to determine the fire resistance of a reinforced concrete frame first subjected to simulated seismic damage). The open source software framework OpenSees was chosen for the modelling work as it was considered to be the best software tool for modelling structures under earthquake loading. The first part of this thesis reports the development work done on OpenSees for adding thermomechanical analysis modules to enable the modelling of FFE events using this software framework. The code developed for OpenSees has been allowed the introduction of features not available in commercial software such as ABAQUS. Many new classes were developed, such as ThermalAction, ThermalElement, ThermalSeciton, TheramalMaterial, etc. The newly developed code was tested using a number of benchmark problems and modelling of real fire experiments on steel and composite framed structures. The results from these tests showed that the new developments were successful. The second part of the thesis describes the modelling of the reinforced concrete (RC) frame tested at IIT Roorkee, which was first subjected to cyclic displacement loading (to introduce damage in the frame similar to that of a seismic event) and then to a one hour kerosene fire. The modelling was first used to provide predictions of the performance of the test frame under the proposed loading, to fine tune the design of the experiment. The modelling subsequent to the tests was gradually improved to achieve better comparisons with the test results and to develop a detailed understanding of the behaviour of seismically damaged RC frames in fire, which was also compared to the behaviour in fire of undamaged frames.
APA, Harvard, Vancouver, ISO, and other styles
4

Domingues, Sérgio Ricardo Ribeiro. "Modelação tridimensional de estruturas sujeitas a sismos utilizando o OpenSees." Master's thesis, Faculdade de Ciências e Tecnologia, 2013. http://hdl.handle.net/10362/11484.

Full text
Abstract:
Dissertação para obtenção do Grau de Mestre em Engenharia Civil – Perfil de Estruturas
Os sismos são fenómenos que podem ter consequências socioeconómicas elevadas, pelo que é necessário estudar os seus efeitos nas estruturas. Assim, nos últimos anos têm sido estudados e desenvolvidos, matematicamente e numericamente, modelos capazes de reproduzir fielmente o comportamento de estruturas em aço sujeitas a sismos, o que permitiu uma evolução da modelação dessas estruturas. Neste trabalho, são apresentadas várias técnicas de modelação não-linear de estruturas em aço, tendo sido aplicadas, com o programa de elementos finitos Open System for Earthquake Engineering Simulation (OpenSees), a vários exemplos e a dois casos de estudo de forma a serem avaliadas. No primeiro caso de estudo, estudou-se o comportamento sísmico da estrutura de betão armado com parede de alvenaria de enchimento, descrita em Hashemi e Mosalam (2007), com o objetivo de validar o modelo de fibras, que simula o comportamento de paredes de enchimento. Através dos resultados obtidos, e comparando com os resultados experimentais, foi possível validar o comportamento desse modelo no plano, após a calibração de alguns parâmetros. No segundo caso de estudo, foi estudado o comportamento sísmico do edifício de quatro pisos com estrutura em aço testado no E-Defense (2007). O edifício foi modelado tridimensionalmente no OpenSees com elementos de plasticidade concentrada, zonas painel de ligação viga-pilar e paredes exteriores. Neste modelo teve-se em conta os efeitos P-Delta, a influência das lajes na flexão das vigas e o comportamento de diafragma rígido das lajes. De forma a modelar a estrutura, com um comportamento mais próximo do verificado experimentalmente, foi desenvolvido um novo modelo de comportamento das zonas de painel, através de uma análise de sensibilidade. Para além disso, o modelo de fibras das paredes, apresentado inicialmente neste trabalho, foi calibrado de forma a simular o comportamento verificado experimentalmente. Através dos resultados obtidos, e comparando-os com os resultados experimentais, verificou-se que é possível, com recurso às ferramentas apresentadas neste trabalho, reproduzir com precisão a resposta sísmica de estruturas de aço.
APA, Harvard, Vancouver, ISO, and other styles
5

Dai, Xu. "Extended travelling fire method framework with an OpenSees-based integrated tool SIFBuilder." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/33088.

Full text
Abstract:
Many studies of the fire induced thermal and structural behaviour in large compartments, carried out over the past two decades, show a great deal of non-uniformity, unlike the homogeneous compartment temperature assumption in the current fire safety engineering practice. Furthermore, some large compartment fires may burn locally and they tend to move across entire floor plates over a period of time as the fuel is consumed. This kind of fire scenario is beginning to be idealized as 'travelling fires' in the context of performance‐based structural and fire safety engineering. However, the previous research of travelling fires still relies on highly simplified travelling fire models (i.e. Clifton's model and Rein's model); and no equivalent numerical tools can perform such simulations, which involves analysis of realistic fire, heat transfer and thermo-mechanical response in one single software package with an automatic coupled manner. Both of these hinder the advance of the research on performance‐based structural fire engineering. The author develops an extended travelling fire method (ETFM) framework and an integrated comprehensive tool with high computational expediency in this research, to address the above‐mentioned issues. The experiments conducted for characterizing travelling fires over the past two decades are reviewed, in conjunction with the current available travelling fire models. It is found that no performed travelling fire experiment records both the structural response and the mass loss rate of the fuel (to estimate the fire heat release rate) in a single test, which further implies closer collaboration between the structural and the fire engineers' teams are needed, especially for the travelling fire research topic. In addition, an overview of the development of OpenSees software framework for modelling structures in fire is presented, addressing its theoretical background, fundamental assumptions, and inherent limitations. After a decade of development, OpenSees has modules including fire, heat transfer, and thermo‐mechanical analysis. Meanwhile, it is one of the few structural fire modelling software which is open source and free to the entire community, allowing interested researchers to use and contribute with no expense. An OpenSees‐based integrated tool called SIFBuilder is developed by the author and co‐workers, which can perform fire modelling, heat transfer analysis, and thermo-mechanical analysis in one single software with an automatic coupled manner. This manner would facilitate structural engineers to apply fire loading on their design structures like other mechanical loading types (e.g. seismic loading, gravity loading, etc.), without transferring the fire and heat transfer modelling results to each structural element manually and further assemble them to the entire structure. This feature would largely free the structural engineers' efforts to focus on the structural response for performance-based design under different fire scenarios, without investigating the modelling details of fire and heat transfer analysis. Moreover, the efficiency due to this automatic coupled manner would become more superior, for modelling larger structures under more realistic fire scenarios (e.g. travelling fires). This advantage has been confirmed by the studies carried out in this research, including 29 travelling fire scenarios containing total number of 696 heat transfer analysis for the structural members, which were undertaken at very modest computational costs. In addition, a set of benchmark problems for verification and validation of OpenSees/SIFBuilder are investigated, which demonstrates good agreement against analytical solutions, ABAQUS, SAFIR, and the experimental data. These benchmark problems can also be used for interested researchers to verify their own numerical or analytical models for other purposes, and can be also used as an induction guide of OpenSees/SIFBuilder. Significantly, an extended travelling fire method (ETFM) framework is put forward in this research, which can predict the fire severity considering a travelling fire concept with an upper bound. This framework considers the energy and mass conservation, rather than simply forcing other independent models to 'travel' in the compartment (i.e. modified parametric fire curves in Clifton's model, 800°C‐1200°C temperature block and the Alpert's ceiling jet in Rein's model). It is developed based on combining Hasemi's localized fire model for the fire plume, and a simple smoke layer calculation by utilising the FIRM zone model for the areas of the compartment away from the fire. Different from mainly investigating the thermal impact due to various ratios of the fire size to the compartment size (e.g. 5%, 10%, 25%, 75%, etc.), as in Rein's model, this research investigates the travelling fire thermal impact through explicit representation of the various fire spread rates and fuel load densities, which are the key input parameters in the ETFM framework. To represent the far field thermal exposures, two zone models (i.e. ASET zone model & FIRM zone model) and the ETFM framework are implemented in SIFBuilder, in order to provide the community a 'vehicle' to try, test, and further improve this ETFM framework, and also the SIFBuilder itself. It is found that for 'slow' travelling fires (i.e. low fire spread rates), the near‐field fire plume brings more dominant thermal impact compared with the impact from far‐field smoke. In contrast, for 'fast' travelling fires (i.e. high fire spread rates), the far‐field smoke brings more dominant thermal impact. Furthermore, the through depth thermal gradients due to different travelling fire scenarios were explored, especially with regards to the 'thermal gradient reversal' due to the near‐field fire plume approaching and leaving the design structural member. This 'thermal gradient reversal' would fundamentally reverse the thermally‐induced bending moment from hogging to sagging. The modelling results suggest that the peak thermal gradient due to near‐field approaching is more sensitive to the fuel load density than fire spread rate, where larger peak values are captured with lower fuel load densities. Moreover, the reverse peak thermal gradient due to near‐field leaving is also sensitive to the fuel load density rather than the fire spread rate, but this reverse peak value is inversely proportional to the fuel load densities. Finally, the key assumptions of the ETFM framework are rationalised and its limitations are emphasized. Design instructions with relevant information which can be readily used by the structural fire engineers for the ETFM framework are also included. Hence more optimised and robust structural design under such fire threat can be generated and guaranteed, where we believe these efforts will advance the performance‐based structural and fire safety engineering.
APA, Harvard, Vancouver, ISO, and other styles
6

Jiang, Ya-Qiang. "Development and application of a thermal analysis framework in OpenSees for structures in fire." Thesis, University of Edinburgh, 2013. http://hdl.handle.net/1842/7941.

Full text
Abstract:
The last two decades have witnessed the shift of structural fire design from prescriptive approaches to performance-based approaches in order to build more advanced structures while reducing costs. However, it is recognised that the implementation of performance-based approaches requires several key elements that are currently not fully developed or understood. This research set out to address some of these issues by focusing on the development, validation and application of methodologies for accurate predictions of thermal responses of structures in fire using numerical methods. This research firstly proposed a numerical approach with the finite element and the discrete ordinates method to quantify the fire imposed radiative heat fluxes to structural members with cavity geometry. With satisfactory results from the verification and validation tests, it is used to simulate heat transfer to unprotected steel I-sections with symmetrical cavities exposed to post-flashover fires. Results show that the cavity geometry could strongly attenuate the radiative energy, while the presence of hot smoke enhances radiative transfer by emission. Average radiative fluxes for the inner surfaces of the I-sections are seen to increase with smoke opacity. In addition, the net radiative fluxes are observed to decrease faster for I-sections with higher section factors. This work also shows that the self-radiating mechanism of I-sections is important in the optically thin region, and existing methodologies neglecting these physics could significantly underpredict steel temperatures. The next focus of this work is to develop a thermal analysis framework dedicated to structures-in-fire modelling in the OpenSees (Open System for Earthquake Engineering Simulation) platform which has been developed towards a highly robust, extensible and flexible numerical analysis framework for the structural fire engineering community. The thermal analysis framework, which is developed with object-oriented programming paradigm, consists of a fire module which has incorporated a range of conventional empirical models as well as the travelling fire model recently developed elsewhere to quantify the fire imposed boundary conditions, and a heat transfer module which addresses non-linear heat conduction in structural members with the finite element method. The developed work has demonstrated good performance from benchmark problems where analytical solutions are available and from full scale tests with measured data. With the thermal analysis capability developed in this work together with the work by other colleagues to quantify the mechanical response at elevated temperatures, the extended OpenSees framework can be used to predict structural performances subjected to a wide range of re scenarios. This work uses OpenSees for a case study of a generic composite structure subjected to travelling fires. The latest work on travelling fire methodology for structural fire design has been implemented in the OpenSees framework. The work presented in this thesis is the first effort to examine both the thermal and structural responses of a composite tall building in travelling fires using OpenSees. Results from the thermal analysis show that travelling fires of larger sizes (e.g. burning area equal to 50% of the floor area) are more detrimental to steel beams in terms of more rapid heating rate, while those of smaller sizes (e.g. burning area equal to 4% of the floor area) burn for longer duration and thus are more detrimental to concrete slabs in light of higher peak temperatures. The results also show that fires of large sizes tends to produce higher through-depth thermal gradients in the steel beam sections particularly in neighbouring regions with the concrete slab. Due to less rapid heating rates but prolonged burning durations, smaller fires produce lower thermal gradients but with higher temperatures in the concrete slab particularly at locations far from the fire origin. The subsequent structural analysis suggests that travelling fires produce higher deflections and higher plastic deformations in comparison with the uniform parametric fires, particularly with smaller fire sizes producing more onerous results. The results seem to be more physically convincing and they challenge the conventional assumption that the post-flashover fires are always more conservative for structural performance.
APA, Harvard, Vancouver, ISO, and other styles
7

Yang, Zhaohui. "Development of geotechnical capabilities into OpenSees platform and their applications in soil-foundation-structure interaction analyses /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2002. http://uclibs.org/PID/11984.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Lucchi, Maicol. "Calibrazione e confronto di modelli isteretici per il comportamento ciclico di pilastri in c.a." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2010. http://amslaurea.unibo.it/1695/.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Jiang, Liming. "Development of an integrated computational tool for modelling structural frames in fire considering local effects." Thesis, University of Edinburgh, 2016. http://hdl.handle.net/1842/19563.

Full text
Abstract:
In terms of developing knowledge to enable more effective use of performance based engineering (PBE), one of the key limitations is the lack of an easy to use integrated computational tool that is also robust and comprehensive enough to enable automated modelling of more realistic fire scenarios, i.e., the structural response to localised or travelling fires. The main objective of this thesis is to establish such an integrated computational tool, which shall be based on the OpenSees software framework and facilitated by specially developed approaches to achieve higher efficiency of the integrated analysis. This includes the analysis of heat transfer from the fire to structural members, as well as the analysis of structural response to elevated temperatures during the fire. In this thesis, the research begins with the investigation of the feasibility of dimensional reduction for heat transfer analyses of structural members subjected to localised fire action (SFPE and Eurocode 1 fire models), which can be numerically represented by a linear or exponential correlation between incident heat flux and radial distance. Accurate estimates of the error induced by dimensional reduction are presented under strongly varying localised heat fluxes that represent the most non-uniform fire conditions in a building compartment. It is shown that beams and slabs can be adequately modelled with a lower dimensional heat transfer analysis for ordinary building fires. Using this approach, the complexity of heat transfer modelling and the required computing resource and user effort can both be significantly reduced, especially in cases where structural members are subjected to localised fire action. Thermo-mechanical simulations are presented to address the behaviour of structural members subjected to localised fire action, for which a ThermalAction- Wrapper is developed to approximate the temperature distribution from a mixed-order interpolation between sections (beam) or locations (slab). For concrete slabs subjected to localised fire, MITC4 based shell elements are used to account for material and geometric nonlinearities. An integrated simulation environment is developed, which is designed to be a computational tool that requires limited input but provides a comprehensive solution to the problem of simulating large structural frame and sub-frame response under realistic fire scenarios. A considerable amount of code has been written to create and operate the building model, and to process the heat fluxes from the design fires to the structure and the consequential structural response to the evolution of temperatures within it. Parametric studies have been performed to investigate the computational performance of the newly developed elements in modelling beams and slabs subjected to different cases of localised fire action. The results suggest that 3 to 6 force-based beam elements can adequately describe the localised response however more elements are required for quadratic distribution of incident heat flux and higher temperatures, which is due to the degradation of material strength that governs the accuracy especially when the members are heavily loaded. For slabs exposed to localised fires, centre fires are found to produce greater deflections than corner fires, while lateral restraints applied to the slabs may also lead to higher deflections. A small-scale three dimensional structural frame is modelled as a demonstration of the tool, tested against a number of localised fire scenarios. The global behaviour of the structure with the local effects induced by the fire action and partially damaged fire protection are investigated. Severe damage can be found in the members exposed to a single whole compartment fire, in contrast with the relatively small deflections that are observed when a fully protected column is engulfed by a localised fire. However if the passive fire protection is partially damaged, collapse may occur in the column as a result of load magnification because of the redistribution. To the author's knowledge this is the first piece of research that has been able to develop a practically feasible approach to enable efficient coupled computation of the response of structural frames to realistic fire scenarios on a freely available open source software platform. Currently this kind of analysis can only be carried out by just two or three large consulting firms because of the prohibitive commitment of analyst time and effort and to a lesser extent the need for significant computing resources. The work of this thesis will contribute enormously towards making high-end performance based engineering of structural fire resistance a much more practical proposition for small and medium size structural consultancies. Furthermore, the choice of OpenSees, which is a very well respected software framework for simulating structural response to earthquakes naturally enables this work to be extended to the simulating the multi-hazard structural resistance, such as in the event of a fire following an earthquake which may have locally damaged passive fire protection.
APA, Harvard, Vancouver, ISO, and other styles
10

Guerra, Elia. "valutazione della robustezza strutturale mediante approcci di affidabilita’ tipo form. analisi della copertura a capriate del bacino di carenaggio delle Gaggiandre – Arsenale di Venezia." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "Openseespy"

1

Polimeru, Vijay Kumar, and Arghadeep Laskar. "Development of VC++ Wrapper for Structural Modeling in OpenSEES." In Resilient Infrastructure, 161–73. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-6978-1_12.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Sessa, Salvatore, Nicoló Vaiana, Massimo Paradiso, and Luciano Rosati. "Thermodynamic Compatibility of the HystereticPoly Uniaxial Material Implemented in OpenSees." In Advanced Structured Materials, 565–80. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-04548-6_27.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Sarkar, N., and K. Dasgupta. "Comparative Study of Concrete Models in OpenSEES for Performing Nonlinear Analysis." In Lecture Notes in Civil Engineering, 1135–43. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-80312-4_99.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

He, Qingguang, and Lei He. "Seismic performance analysis of a new layered suspension structure system based on OpenSees." In Advances in Civil Engineering: Structural Seismic Resistance, Monitoring and Detection, 107–11. London: CRC Press, 2022. http://dx.doi.org/10.1201/9781003310884-16.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Usmani, A., Y. Jiang, J. Jiang, L. Jiang, and S. Welch. "Adapting OpenSees to simulate bridge structures in fire." In Bridge Maintenance, Safety, Management, Resilience and Sustainability, 1580–84. CRC Press, 2012. http://dx.doi.org/10.1201/b12352-227.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Wang, S., and H. Brandes. "OpenSees modeling of the 3D plastic behavior of underwater slopes." In Frontiers in Offshore Geotechnics. Taylor & Francis, 2005. http://dx.doi.org/10.1201/noe0415390637.ch104.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Piatti, C., L. Zuccarino, and O. Zanoli. "Offshore 1D infinite slope modeling in seismic conditions with OpenSees." In Frontiers in Offshore Geotechnics III, 993–97. CRC Press, 2015. http://dx.doi.org/10.1201/b18442-145.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

"OpenSees modeling of the inelastic seismic response of steel roof deck diaphragms." In Behaviour of Steel Structures in Seismic Areas, 793–98. CRC Press, 2009. http://dx.doi.org/10.1201/9780203861592-131.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Rogers, C., K. Shrestha, R. Tremblay, and J. Franquet. "OpenSees modeling of the inelastic seismic response of steel roof deck diaphragms." In Behaviour of Steel Structures in Seismic Areas. CRC Press, 2009. http://dx.doi.org/10.1201/9780203861592.ch112.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Aguero, Antonio, Carmen Izvernari, and Robert Tremblay. "MODELING OF THE SEISMIC RESPONSE OF CONCENTRICALLY BRACED STEEL FRAMES USING THE OPENSEES ANALYSIS ENVIRONMENT." In Volume 2 Number 3, 242–74. The Hong Kong Institute of Steel Construction, 2006. http://dx.doi.org/10.18057/ijasc.2006.2.3.5.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Openseespy"

1

Uribe-Henao, A. Felipe, Luis G. Arboleda-Monsalve, David G. Zapata-Medina, and Fernando Sarabia. "Modeling Deep Excavations in OpenSees." In Geo-Congress 2020. Reston, VA: American Society of Civil Engineers, 2020. http://dx.doi.org/10.1061/9780784482803.004.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Scott, Michael H. "Extensions of OpenSees for Bridge Management Applications." In 18th Analysis and Computation Specialty Conference at Structures Congress. Reston, VA: American Society of Civil Engineers, 2008. http://dx.doi.org/10.1061/41000(315)5.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

M., Chandana, Unni Kartha G., and Mahesh C. "Parallel Computing for Earthquake Analysis using Opensees." In Proceedings of the Advances in Technology, Engineering and Computing A Multinational Colloquium - 2017. Singapore: Research Publishing Services, 2017. http://dx.doi.org/10.3850/978-981-11-0744-3_c17-27.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Xie, Linlin, Xiao Lu, Xinzheng Lu, Yuli Huang, and Lieping Ye. "Multi-Layer Shell Element for Shear Walls in OpenSees." In 2014 International Conference on Computing in Civil and Building Engineering. Reston, VA: American Society of Civil Engineers, 2014. http://dx.doi.org/10.1061/9780784413616.148.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Lam, Ignatius (Po), Pedro Arduino, and Peter Mackenzie-Helnwein. "OPENSEES Soil-Pile Interaction Study under Lateral Spread Loading." In International Foundation Congress and Equipment Expo 2009. Reston, VA: American Society of Civil Engineers, 2009. http://dx.doi.org/10.1061/41022(336)27.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Jiang, Liming, Mhd Anwar Orabi, Jin Qiu, and Asif Usmani. "Modelling concrete slabs subjected to localised fire action with OpenSees." In 11th International Conference on Structures in Fire (SiF2020). Brisbane, Australia: The University of Queensland, 2020. http://dx.doi.org/10.14264/2acf3b9.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Domada, Ramakanth Veera Venkata, Aatif Ali Khan, Mustesin Ali Khan, and Asif Usmani. "OpenSees simulation of the collapse of Plasco tower in fire." In 11th International Conference on Structures in Fire (SiF2020). Brisbane, Australia: The University of Queensland, 2020. http://dx.doi.org/10.14264/e1f0ecb.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Attarchian, N., A. Kalantari, and A.-S. Moghaddam. "CYCLIC BEHAVIOR MODELING OF RECTANGULAR RC BRIDGE PIERS USING OPENSEES." In 4th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering. Athens: Institute of Structural Analysis and Antiseismic Research School of Civil Engineering National Technical University of Athens (NTUA) Greece, 2014. http://dx.doi.org/10.7712/120113.4665.c1595.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Wenlong, Chen, Yuan Shengxiang, Li Shunan, and Ma Jianlin. "The shear wall simulation of four elements based on opensees." In the 8th International Conference. New York, New York, USA: ACM Press, 2019. http://dx.doi.org/10.1145/3323716.3323765.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Zheng, Yuguo, Yingliang Song, and Yu Wang. "Development of Constitutive Model of ECC Based on OpenSees Platform." In 2018 3rd International Conference on Smart City and Systems Engineering (ICSCSE). IEEE, 2018. http://dx.doi.org/10.1109/icscse.2018.00125.

Full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Openseespy' for particular source types:
Journal articles Dissertations / Theses
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography