ABAQUS CEL模型中Euler to Euler接触

pengbingxiao

各位大神，
我在用CEL方法建一个接触模型。这个接触模型中的euler domain 有两种不同材料 (A, B)，这两种不同的材料之间需要定义接触。同时第三种材料定义为lagrange domain，它会和 Euler domain里面的两种材料A, B发生接触。
总结:
Euler to Euler Contact: A和B
Euler to Lagrangian contact: A和C， C和B

问题:
1. Euler to Lagrangian contact (A和C， C和B)可以解决，abaqus可以定义接触。但是Euler to Euler contact(A和B)按照abaqus documentation 会自动定义为接触，除此之外LZ并没有找到其他信息。
2. Euler to Euler 接触的性质，如何定义? 比如摩擦和热交换
3. Euler to Euler contact可以输出CPRESS, DSLIP等接触数据吗?

拜谢！！！

pengbingxiao

不要沉！

pengbingxiao

求指教！大神大神快出现！

pengbingxiao

不要沉！

pengbingxiao

ABAQUS 回应:

Unfortunately, it is not possible to set up the interaction property between two eulerian materials. The interaction behavior between the eulerian materials is sticky. This is described in Section 14.1.1 "Eulerian analysis", Paragraph "Interactions":

"Eulerian material instances interact with each other with a sticky behavior. This sticking occurs because of the kinematic assumption that a single strain field is applied to all materials within an element. Tensile stress can be transmitted across an interface between two Eulerian materials, and no slip occurs at these interfaces. This Eulerian-to-Eulerian contact behavior can be reasonable in some situations, such as in a simulation of a lead bullet penetrating a steel plate. Ablation of the bullet surface against the steel is captured by the sticky behavior within the Eulerian elements at the bullet-steel interface. Relative motion along this interface will occur only due to shearing of the lead material.

Eulerian-to-Eulerian contact occurs by default in an Eulerian analysis; you do not need to define contact interactions between Eulerian materials.

More complex contact interactions can be simulated when one of the contacting bodies is modeled using Lagrangian elements. This powerful capability supports applications such as fluid-structure interaction, where an Eulerian fluid contacts a Lagrangian structure."

So interaction between eulerian materials is not modelled as contact as in the case of Eulerian to Lagrangian contact. As a  result there are also no contact output variables available for the interaction between Eulerian materials

yinqilin007

非常感谢。请问，如何在一个欧拉体中设置两种材料？

干物男00

yinqilin007 发表于 2016-5-20 13:50
非常感谢。请问，如何在一个欧拉体中设置两种材料？

在Property中Section中可以同时设置多个材料
C:\Users\Administrator.PC-20181226MQSY\Desktop\2019-04-29_145416

Laurence

lz，你好，请问一下流固耦合的CEL方法中如何添加连续不断的流体呢，像这个一样

sunenjoy

你好，请问你欧拉体和结构之间的接触是通过什么设置接触的呢，通用接触嘛？还是可以有别的方法的

MyGod1123

可以试试 通用接触。
interaction->Create interaction->在initial状态下选择general contact。相应的interaction property可设置为contact的默认选项。

ty6194

楼主你好，想请问一下怎么处理同一个区域内有两种欧拉材料，比如欧拉材料为炸药和空气。谢谢楼主！