optistruct 提示ERROR2933 there are more number of degree of freedoms with double dependency than the number of independent degree of freedom near grid ID 834173。怎么办？

It is likely that either a displacement boundary condition has been applied directly onto a constraint equation or two or more constraint equations share too many degrees of freedom. ”查找节点ID号后发现有几个是弹簧选择的面上的节点

A nodal point 15494 15494point has the same degree of freedom constrained 15495 15495in more than one set. node number= 1656 17332 17332

abaqus 报错 A group of connected equations has more than 1000 independent degrees of freedom. Abaqus/Explicit cannot efficiently solve this system.

number 48163 of instance P2CULAYER-1

For accuracy, running double precision executable is required 或者这个 THE ANALYSIS NEEDS AN EXTREMELY LARGE NUMBER OF INCREMENTS (MORE THAN 2,000,000).

ERROR: Abaqus/Explicit requires isothermal rigid bodies to have a non-zero capacitance unless temperature degrees of freedom are constrained with the *BOUNDARY option.

用粒子生成器做喷丸强化出现以下报错：The analysis may need a large number of increments (more than 20,000,000), and it may be affected by round-off errors.

做轮轨耦合遇到以下问题：Node 37818 has zero rotary inertia but not all rotational degrees of freedom are constrained at this node. Please assign a physically reasonable rotary inertia to this node. 求助