麻煩大家指導(dǎo)下~~~~

ABAQUS模擬桿件系統(tǒng)中，一個(gè)桿兩段均設(shè)置非線性軸向連接器，一開(kāi)始就不收斂算不過(guò)去。嘗試過(guò)一端連接器，一段MPC-tie連接可以收斂，希望大神指導(dǎo)下~~

錯(cuò)誤警告：

One or more thickness of the box section is greater than 0.1 of the cross section dimension. The torsional rigidity may not be evaluated accurately since the calculation is based on the assumption that the wall thickness is much small in comparison to the cross section dimension

Strain output request le is not valid for some elements in this analysis. This request is switched to the strain measure, e.

Output request pe is not available for element type conn3d2

Strain output request le is not valid for some elements in this analysis. This request is switched to the strain measure, e.

Nodes 1 instance cgan-2 and 17 instance hengliang-1 in the tie mpc are not coincident. The mpc will constrain rotational rigid-body motion between the nodes. Interpret results with caution or consider substituting a beam or link mpc.

Solver problem. Zero pivot when processing D.O.F. 3 of 1 nodes. The nodes have been identified in node set WarnNodeSolvProbZeroPiv_3_1_1_1_1.

A CONNECTOR TYPE AXIAL IS USED IN A  GEOMETRICALLY LINEAR ANALYSIS. EXTRA CARE MUST BE EXERCISED IN INTERPRETING KINEMATIC OUTPUT VARIABLES (SUCH AS CU, CP, etc.) ASSOCIATED WITH THIS ELEMENT. AS A CONSEQUENCE, CONNECTOR STOPS/LOCKS AND KINETIC BEHAVIOR FOR THIS ELEMENT MAY BE DIFFICULT TO INTERPRET.

Solver problem. Zero pivot when processing D.O.F. 3 of 1 nodes. The nodes have been identified in node set WarnNodeSolvProbZeroPiv_3_1_1_1_2.