車輪轉動時，求軸對車輪中心的向下壓力導致輻條的彎曲變形的應力。將車輪外圈作為固定的轉動副，車軸端部與車輪中心孔綁定約束， 
時間步：車輪一圈是0.05s 
加載：轉速是1200rpm，車軸遠端給定一個固定的y方向的力。 

求一圈的瞬時應力。 
結果錯誤：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.