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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。怎么辦？

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. ”查找節點ID號后發現有幾個是彈簧選擇的面上的節點

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

abaqus 報錯 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 或者這個 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.

用粒子生成器做噴丸強化出現以下報錯：The analysis may need a large number of increments (more than 20,000,000), and it may be affected by round-off errors.