Abstract An innovative numerical scheme to improve the integration algorithm for critical state elastoplasticity is presented and detailed with special consideration to the modified Cam-Clay model. The scheme is based on a rotation of the principal stresses and represents the elastoplastic model in a rotated Haigh-Westergaard space. Such an approach allows the calculation of modified Cam-Clay tobe computationally stable and easy to implement. The validity of the proposed scheme is verified by comparing the numerical results with analytic solutions.

中文翻译：

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一种改进改进Cam-Clay塑性模型积分算法的创新程序

摘要 提出并详细介绍了一种改进临界状态弹塑性积分算法的创新数值方案，并特别考虑了修正的 Cam-Clay 模型。该方案基于主应力的旋转，并表示旋转 Haigh-Westergaard 空间中的弹塑性模型。这种方法允许修正 Cam-Clay 的计算在计算上是稳定的并且易于实现。通过将数值结果与解析解进行比较，验证了所提出方案的有效性。