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An axisymmetrical quasi-Kirchhoff-type shell element for large plastic deformations

机译:大塑性变形的轴对称拟基尔霍夫型壳单元

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摘要

An axisymmetrical shell element for large plastic strains is developed. The theory is based on the multiplicative decomposition of the material deformation gradient into an elastic and a plastic part. For quasi-Kirchhoff-type axisymmetric shells this leads to a product of the elastic and plastic stretches. By introduction of logarithmic strains the decomposition becomes additive. Plastic incompressibility is fulfilled in an exact manner.
机译:开发了一种用于大塑性应变的轴对称壳单元。该理论基于材料变形梯度的乘法分解,分解为弹性和塑性零件。对于准基尔霍夫型轴对称壳体,这将导致弹性和塑性拉伸。通过引入对数应变,分解成为累加的。塑料的不可压缩性以精确的方式实现。

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