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Dissertations / Theses on the topic 'Thin-walled'

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1

Rivet, Adam. "Distortional analysis of thin walled beams." Thesis, University of Ottawa (Canada), 2010. http://hdl.handle.net/10393/28687.

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A general solution for the stress-deformation analysis of interconnected plates subjected to general loading conditions is developed. The solution is based on the assumptions of thin-walled plate theory and is limited to combinations of straight plates made of linearly elastic isotropic material. The principle of stationary potential energy is used in conjunction with series expansion for the displacement fields to formulate the equilibrium conditions and boundary conditions. In general, the differential equilibrium equations are coupled. A quasi-closed form solution for the displacement field
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2

Achour, Belkacem. "Nonlinear behaviour of thin walled bars." Thesis, Cardiff University, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.314695.

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3

Li, Yang. "Thin-walled structures for energy absorption." Thesis, University of Oxford, 2016. https://ora.ox.ac.uk/objects/uuid:a359d355-cf1b-4409-8440-624d40f93bfa.

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This thesis considered three types of new and improved high-performance energy absorbing devices for either compression or bending applications. These improvements were achieved by only altering their initial geometries for desired failure modes.
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4

Tan, Lin Tze. "Thin-walled elastically foldable reflector structures." Thesis, University of Cambridge, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.619853.

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5

Wang, Ting. "Modelling of welded thin-walled aluminium structures." Doctoral thesis, Norwegian University of Science and Technology, Department of Structural Engineering, 2006. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-1517.

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<p>This thesis aims to develop a comprehensive methodology for capacity prediction of thin-walled welded aluminium structures. Through material testing, model choice and calibration, numerical simulations and experimental verification, a procedure and a combination of modelling techniques using shell elements were obtained for such structures.</p><p>Experimental and numerical studies were performed to investigate the structural capacity of quasi-statically loaded fillet-welded connections. The data of two other series of experiments were adopted from a previous study and were used to verify th
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6

Mashiri, Fidelis Rutendo 1968. "Thin-walled tubular connections under fatigue loading." Monash University, Dept. of Civil Engineering, 2001. http://arrow.monash.edu.au/hdl/1959.1/8784.

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7

Rogers, John B. C. "Guided waves in thin-walled structural members." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0006/MQ41767.pdf.

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8

Badir, Ashraf M. "Analysis of advanced thin-walled composite structures." Diss., Georgia Institute of Technology, 1992. http://hdl.handle.net/1853/12337.

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9

Kwok, Raymond Moon Keung. "Mechanics of damaged thin-walled cylindrical shells." Thesis, University of Surrey, 1991. http://epubs.surrey.ac.uk/993/.

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10

Sin, K. W. "The collapse behaviour of thin-walled sections." Thesis, University of Strathclyde, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.372122.

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11

Shim, V. P. W. "Dynamic crushing of thin-walled tube arrays." Thesis, University of Cambridge, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.372916.

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12

Zhang, Boshu. "Bistable and multi-stable thin-walled structures." Thesis, University of Oxford, 2017. https://ora.ox.ac.uk/objects/uuid:05e0e48f-2da6-4d53-914a-cc1b46b9e87d.

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This study aims to comprehend the bistable and multi-stable behaviour of flexible straws with the intention of utilising it for future engineering applications. This behaviour is achieved by the multiple inversions of conical frustum shells within the corrugation of a flexible straw. This study examined the effects of various material models, geometry variables and loading methods on the inversion of close-top and open-top conical frustum shells via experiments and FEM simulations. This thesis consists of three main parts, and the second and the third parts are complementary to each other: Fir
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13

Savic, Vesna. "Design optimization of thin-walled composite beams /." Thesis, Connect to this title online; UW restricted, 2000. http://hdl.handle.net/1773/7036.

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14

Zheng, Li Ph D. Massachusetts Institute of Technology. "Fracture of welded aluminum thin-walled structures." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/35629.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, February 2006.<br>Includes bibliographical references (leaves 269-279).<br>A comprehensive methodology was developed in the thesis for damage prediction of welded aluminum thin-walled structures, which includes material modeling, calibration, numerical simulation and experimental verification. An extensive experimental program was conducted on large-scale welded panels used on Inter City Express (ICE) high-speed European passenger trains. These panels consist of geometrically complex extrusions, which are
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15

Zhang, Fan. "Surface loading of a thin-walled toroidal shell." Thesis, University of Ottawa (Canada), 1992. http://hdl.handle.net/10393/7850.

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The present study is concerned with the series solution based on the Sanders shell theory for the linear elastic problems of the surface loading of thin-walled toroidal shells. The Sanders theory is considered to be one of the most accurate first order theories. For toroidal shells, series solutions have been given by several authors, using other theories and furthermore using a stress approach. In the present study a displacement approach is taken. The governing equations are first developed in toroidal coordinates. The loading case of a pad of uniform normal pressure is then considered in de
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16

古國紀 and Kwok-kee Koo. "Analysis of thin walled structures in tall buildings." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1986. http://hub.hku.hk/bib/B31230878.

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17

Al-Sheikh, Abdelraouf. "Behaviour of thin-walled structures under combined loads." Thesis, Loughborough University, 1985. https://dspace.lboro.ac.uk/2134/7413.

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The thesis is concerned with the theory of thin-walled beams of open section. The aim is to formulate a general beam element for analysis of this type of structure. Thus a general stiffness matrix for the element, and a transformation matrix for loads and displacements with respect to centroid and shear centre were derived, by taking into consideration the value of-bimoment due to an axial force offset from the shear centre. Internal forces including bimoments, and global displacements including warping were calculated, and the stress distributions on the cross-sections of a beam at each-eleme
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18

Ata, M. "Torsional analysis of thin-walled fibrous composite beams." Thesis, Cranfield University, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.333145.

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19

Bueno, Benedito de Souza. "The behaviour of thin walled pipes in trenches." Thesis, University of Leeds, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.238719.

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20

Miller, Martin Neil. "Stability of thin-walled tanks under wind loading." Thesis, University of Leeds, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.328719.

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21

Azizian, Z. G. "Instability and nonlinear analysis of thin walled structures." Thesis, Bucks New University, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.353839.

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22

Lim, Thiam Huat. "Some plasticity studies relating to thin-walled beams." Thesis, University of Strathclyde, 1995. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=26559.

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In the field of cold formed structural steels, in which the load carrying members consist of thin-walled sections, failure often occurs due to the development of local buckles which are initiated in the compression elements. The work presented in this thesis details experimental and theoretical investigations conducted to study the behaviour of some thin-walled beams which fail mainly due to local buckling. The ultimate load carrying capacity and collapse behaviour of plain channel, lipped channel and zed section beams in simple bending were examined and the results were then used in an extens
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23

Bai, Li. "Interactive buckling in thin-walled I-section struts." Thesis, Imperial College London, 2014. http://hdl.handle.net/10044/1/25003.

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Compression members, made from slender metallic plate elements, are prone to a wide range of different elastic instability phenomena. A thin-walled I-section strut, made from a linear elastic material, can suffer from the nonlinear interaction between a global (Euler) buckling mode, and a local flange plate buckling mode. The interactive buckling behaviour is usually much more unstable than when the modes are triggered individually and hence significantly reduces the load-carrying capacity of real struts. The current work focuses on such a problem using an analytical approach, the methodology
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24

Ranby, Anders. "Structural fire design of thin walled steel sections." Licentiate thesis, Luleå tekniska universitet, 1999. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-18484.

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25

Lo, Hung-Chieh. "Vibration Characteristics of Thin-Walled Noncircular Composite Cylinders." Diss., Virginia Tech, 2010. http://hdl.handle.net/10919/77207.

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The lowest natural frequencies of thin-walled noncircular fiber-reinforced composite cylinders, specifically cylinders with elliptical cross sections, are investigated. Of interest is the variation of the lowest natural frequency, the so-called fundamental frequency, as a function of wall laminate properties, cross-sectional eccentricity and other cylinder geometric parameters. Both simple and clamped support boundary conditions are investigated. Laminate properties that are uniform with circumferential location and laminate properties that vary with circumferential location, by way of varying
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26

Koo, Kwok-kee. "Analysis of thin walled structures in tall buildings /." [Hong Kong : University of Hong Kong], 1986. http://sunzi.lib.hku.hk/hkuto/record.jsp?B12229234.

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27

Rasmussen, Kim J. R. "Stability of thin-walled structural members and systems." Thesis, The University of Sydney, 2017. http://hdl.handle.net/2123/18194.

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This DEng thesis consists of 83 articles containing research material on the stability of thin-walled structural members and systems with emphasis on metal structures. Metal structures are used widely in the construction industry. They include structural members and frames made from rolled and fabricated steel, cold-formed steel, stainless steel and aluminium. Common to these products is the desire to minimise the cross-sectional area to reduce weight and cost. Structural cross-sections are therefore thin-walled and prone to buckling, and an overriding consideration in the design of metal str
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28

Mallikarachchi, H. M. Yasitha Chinthaka. "Thin-walled composite deployable booms with tape-spring hinges." Thesis, University of Cambridge, 2011. https://www.repository.cam.ac.uk/handle/1810/239395.

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Deployable structures made from ultra-thin composite materials can be folded elastically and are able to self-deploy by releasing the stored strain energy. Their lightness, low cost due to smaller number of components, and friction insensitive behaviour are key attractions for space applications. This dissertation presents a design methodology for lightweight composite booms with multiple tape-spring hinges. The whole process of folding and deployment of the tape-spring hinges under both quasi-static and dynamic loading has been captured in detail through finite element simulations, starting f
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29

Lentz, W. Karl. "Optimum coupling in thin-walled, closed section composite beams." Diss., Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/12018.

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30

Kil, Hyun-Gwon. "Propagation of elastic waves on thin-walled circular cylinders." Thesis, Georgia Institute of Technology, 1989. http://hdl.handle.net/1853/15967.

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31

Nasr, El Sayed Abdel Raouf Abdel Kader. "Linear and nonlinear lateral stability of thin walled beams." Thesis, Heriot-Watt University, 1989. http://hdl.handle.net/10399/916.

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32

Georgiadis, Georgios [Verfasser]. "Hot stamping of thin-walled steel components / Georgios Georgiadis." Aachen : Shaker, 2017. http://d-nb.info/1149279877/34.

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33

Broadbent, T. P. "The stress analysis of thin-walled screwed tubular joints." Thesis, University of Nottingham, 1988. http://eprints.nottingham.ac.uk/14055/.

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This report presents the findings of a project studying the stress analysis of screwed tubular joints using photoelastic and finite element techniques. The aim of the work was to optimise the thread form to be used in large diameter, thin walled, tubular screwed joints which may be used as connections in the tethers of Tension-Leg Platforms. Frozen-stress, photoelastic techniques were used to measure the distributions of thread load and peak fillet stresses around the thread spirals of models with different thread shapes and loaded with different loading modes of axial tension, preload only, p
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34

Nemir, M. T. M. "Finite element stability analysis of thin-walled steel structures." Thesis, University of Salford, 1985. http://usir.salford.ac.uk/2219/.

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Recent applications in the use of light gauge steel members have been concerned with developing large scale systems built entirely from cold-formed steel members. An explicit analysis of such structures is complicated by the different phenomena that the structure may be prone to during loading. In particular, elastic buckling phenomena is an important consideration in the design of such structures since the load at which buckling occurs often provides a close upper bound to the carrying capacity of the structure. The first part of this two-part thesis (Part I, Chaptersl-8) has been devoted to
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35

Howells, Hugh Alan. "Collapse behaviour of space trusses with thin-walled members." Thesis, University of Surrey, 1985. http://epubs.surrey.ac.uk/1038/.

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36

Keey, Seah Leong. "Buckling behaviour of edge stiffeners in thin-walled sections." Thesis, University of Strathclyde, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293255.

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37

Hamid, A. B. A. "Bending of thin-walled beams of shallow open section." Thesis, University of Strathclyde, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.303260.

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38

Cecchini, Luca S. "The non-linear flexural response of thin-walled beams." Thesis, University of Bristol, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.425084.

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39

Liang, Ce. "Analysis of crashworthiness of the dimpled thin-walled structures." Thesis, University of Sussex, 2018. http://sro.sussex.ac.uk/id/eprint/78870/.

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Thin-walled structures are often used as kinetic energy absorbers in vehicular systems and infrastructure designs. In such applications, high specific energy absorption is usually desirable, because it is beneficial for weight reduction. The dimpling cold-roll metal forming process introduces dimpled geometry and increases the strength of sheet metal. This thesis aims to investigate the energy absorption characteristics of the dimpled thin-walled structures. A finite element (FE) modelling analysis was performed using ANSYS Explicit Dynamics solver, to predict the response of dimpled structure
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40

Xue, Liang 1973. "Chain link model for axially crushed thin-walled tubes." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/91802.

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41

Ugail, Hassan, and M. J. Wilson. "Automatic design and optimisation of thermoformed thin-walled structures." American Institute of Aeronautics and Astronautics, 2004. http://hdl.handle.net/10454/2954.

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Yes<br>Here the design and functional optimisation of thermoformed thin-walled structures made from plastics is considered. Such objects are created in great numbers especially in the food packaging industry. In fact these objects are produced in such vast numbers each year, that one important task in the design of these objects is the minimisation of the amount of plastic used, subject to functional constraints. In this paper a procedure for achieving this is described, which involves the automatic optimisation of the mold shape taking into account the strength of the final object and i
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42

Drinali, Hayat. "Full-range axisymmetric elasto-plastic large deflection of circular and annular plates under transverse, in-plane and combined loading." Thesis, Lancaster University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.254094.

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43

Wanner, Bertil. "Strategies for Reducing Vibrations during Milling of Thin-walled Components." Licentiate thesis, KTH, Maskin- och processteknologi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-107156.

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Factors such as environmental requirements and fuel efficiency have pushed aerospace industry to develop reduced-weight engine designs and thereby light-weight and thin-walled components. As component wall thickness gets thinner and the mechanical structures weaker, the structure becomes more sensitive for vibrations during milling operations. Demands on cost efficiency increase and new ways of improving milling operations must follow. Historically, there have been two “schools” explaining vibrations in milling. One states that the entry angle in which the cutting insert hits the work piece is
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44

Karlström, Peter. "Thin-walled steel studs in fire: analysis and design recommendations /." Luleå, 2004. http://epubl.luth.se/1402-1757/2004/73.

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45

Mohammed, Ali Hjaji. "Steady State Response of Thin-walled Members Under Harmonic Forces." Thèse, Université d'Ottawa / University of Ottawa, 2013. http://hdl.handle.net/10393/24013.

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The steady state response of thin-walled members subjected to harmonic forces is investigated in the present study. The governing differential equations of motion and associated boundary conditions are derived from the Hamilton variational principle. The harmonic form of the applied forces is exploited to eliminate the need to discretize the problem in the time domain, resulting in computational efficiency. The formulation is based on a generalization of the Timoshenko-Vlasov beam theory and accounts for warping effects, shear deformation effects due to bending and non-uniform warping, transl
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46

Harursampath, Dineshkumar. "Non-classical non-linear effects in thin-walled composite beams." Diss., Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/12501.

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47

Kriegesmann, Benedikt [Verfasser]. "Probabilistic design of thin-walled fiber composite structures / Benedikt Kriegesmann." Hannover : Technische Informationsbibliothek und Universitätsbibliothek Hannover (TIB), 2012. http://d-nb.info/1026931495/34.

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48

Joseph, P. V. "The compressive behaviour of thin-walled cold-formed steel columns." Thesis, University of Cambridge, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.382225.

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49

Pretheesh, Paul C. "Strength and reliability of thin walled structures for marine applications." Thesis, University of Strathclyde, 2011. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=16776.

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50

Mundim, Rafael Borges. "Evaluation of strategies for milling of thin-walled aluminum components." Instituto Tecnológico de Aeronáutica, 2014. http://www.bd.bibl.ita.br/tde_busca/arquivo.php?codArquivo=2962.

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A considerable amount of research has focused on machining dynamics due to the impact it lays upon productivity and quality. Models have been developed with an ever-increasing accuracy in order to predict the dynamic behavior of cutting tools under different circumstances. However, workpiece behavior during machining is also a current limiting factor which is dealt with by means of restricting product designers of using features with thin characteristics. For this reason, designed products will be often oversized due to machining technology restrictions related to dimensions of thin walls. The
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