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A platform for research: civil engineering, architecture and urbanism
Optimum wall thickness distribution for shell structures
The CAO method (Computer Aided Optimisation) was developed at the Forschungszentrum Karlsruhe as a shape-optimisation-program for the simulation of natural growth processes of biological load carriers. With the help of CAO it is on principle possible to optimise any loaded engineering component. After the optimisation with CAO this component shows a constant stress distribution on its surface. Because of that, the existing material will be used optimal by simultaneous low weight. Up to ABAQUS Version 5.3 it was only possible to use shell or membrane elements with a constant wall thickness by the application of the FEM-Software ABAQUS. With the release of ABAQUS Version 5.4 a modification of CAO now allows a variation of the wall thickness in order to get an optimum thickness distribution without under- or overloaded areas of shell or membrane structures. This leads to a homogeneous stress distribution on the surface of the optimised engineering component, which is for example very important for components who get fatigue loading. Especially in the case of geometrical restrictions, the variation of the wall thickness of shell structures can be very useful.
Optimum wall thickness distribution for shell structures
The CAO method (Computer Aided Optimisation) was developed at the Forschungszentrum Karlsruhe as a shape-optimisation-program for the simulation of natural growth processes of biological load carriers. With the help of CAO it is on principle possible to optimise any loaded engineering component. After the optimisation with CAO this component shows a constant stress distribution on its surface. Because of that, the existing material will be used optimal by simultaneous low weight. Up to ABAQUS Version 5.3 it was only possible to use shell or membrane elements with a constant wall thickness by the application of the FEM-Software ABAQUS. With the release of ABAQUS Version 5.4 a modification of CAO now allows a variation of the wall thickness in order to get an optimum thickness distribution without under- or overloaded areas of shell or membrane structures. This leads to a homogeneous stress distribution on the surface of the optimised engineering component, which is for example very important for components who get fatigue loading. Especially in the case of geometrical restrictions, the variation of the wall thickness of shell structures can be very useful.
Optimum wall thickness distribution for shell structures
Zipse, A. (author) / Teschner, M. (author) / Mattheck, C. (author) / Graebe, D. (author)
1997
8 Seiten, 4 Quellen
Conference paper
English
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