The solver engine was unable to converge on a solution for the nonlinear problem as constrained. Please see the Troubleshooting section of the Help System for more information.我想在一個面上施加一個持續(xù)5min的力。請問下怎么施加？能否具體說一下？我嘗試了一下，算出來的結(jié)果出現(xiàn)了這個錯誤，這個結(jié)果是不就不能用了？