Impact response simulation analog method based on novel hybrid stress tetrahedron unit
A simulation method and shock response technology, applied in the field of computational mechanics, which can solve problems such as large amount of calculation, discontinuous element stress, and poor accuracy.
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[0098] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.
[0099] see figure 1 , a shock response simulation method based on a novel hybrid stress tetrahedron element provided by the present invention is realized through the following steps:
[0100] Step 1. Model the target structure and use tetrahedral meshing to solve the domain.
[0101] In this embodiment, the structure is properly modeled as required, and then the structure is subdivided using a tetrahedral mesh.
[0102] Step 2. According to the momentum equation, its weak form is derived based on the principle of virtual work.
[0103] In this embodiment, step 2 is implemented through the following process:
[0104] According to the momentum theorem, the sum of external forces acting on a system is equal to the material derivative of momentum.
[0105]
[0106] Among them, V represents the entire calculation domain, A represents the force surface,...
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