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- W2392948929 abstract "Using FEM (Finite Element Method) calculation software ANSYS, the numerical simulation of the composite case of a solid propellant rocket engine under complicated loads including axial pressure and bending moment is studied.The comparison of numerical calculation results and experimental phenomenon show that the cause which leads to the premature failure of the structure under the anticipant capacity of bearing load is the improper laid layer design,which leads to some layers'stresses exceeding their bearing capacity.Two improved methods for the original structure are proposed.First,in order to increase the bearing capacity of the whole structure, more local reinforcement axial layers must be appended to increase the local bearing load capacity when the materials of all layers are uniform.Second,through replacing the material of the layer with the maximal stress by the material with more bearing capacity and keeping the other layers with the original material,the bearing capacity of the whole structure can be increased.The results of numerical simulation show that the two optimizing methods can markedly increase the bearing load capacity of the shell structure. Using optimization design methods,the bearing load capacity of the structure can be increased from 15% to 20%.And the experiment shows that the bearing load capacity of improved structure is more than 115%." @default.
- W2392948929 created "2016-06-24" @default.
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- W2392948929 date "2005-01-01" @default.
- W2392948929 modified "2023-09-25" @default.
- W2392948929 title "Analysis of Failure and Optimization for Composite Case of Solid Rocket Engine" @default.
- W2392948929 hasPublicationYear "2005" @default.
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