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xwh917金蟲 (初入文壇)
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[求助]
鋼絲繩繞滑輪運(yùn)行的靜力分析和鋼絲繩的疲勞壽命分析
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1、鋼絲繩和滑輪材料分別選擇結(jié)構(gòu)鋼和灰鐵。 2、鋼絲繩繞滑輪運(yùn)動(dòng)的受力分析,施加了三個(gè)約束: (1)滑輪固定; (2)鋼絲繩一端施加拉應(yīng)力115.54MPa; (3)鋼絲繩另一端施加大小和方向與前者相同的拉應(yīng)力。 3、接觸類型設(shè)置: (1)鋼絲繩股與股之間設(shè)置為Rough; (2)鋼絲繩與滑輪之間設(shè)置為Frictional,系數(shù)為0.13。 4、約束控制方程選用增廣拉格朗日法。 5、求解過程中出現(xiàn)了各種各樣的警告和錯(cuò)誤,主要有以下幾個(gè): (1)Warning: One or more bodies may be underconstrained and experiencing rigid body motion. Weak springs have been added to attain a solution. (2)Warning: An iterative solver was used for this model. However, a direct solver may enhance performance. Consider specifying the use of a direct solver. (3)Warning: The unconverged solution (identified as Substep 999999) is output for analysis debug purposes. Results at this time should not be used for any other purpose. (4)Warning: Contact status has experienced an abrupt change. (5)Error: The solver engine was unable to converge on a solution for the nonlinear problem as constrained. (6)Error: Insufficient memory was available for the solver engine to obtain a solution. Try simplifying the model to reduce problem size. 6、針對(duì)上述問題,嘗試過打開弱彈簧,更改求解器,降低接觸剛度,將對(duì)稱接觸改為非對(duì)稱接觸,甚至簡(jiǎn)化網(wǎng)格,改變求解方程,但都沒有使上述問題得到全部解決。 求高人指點(diǎn)。急急急。。!! |

木蟲 (正式寫手)
新蟲 (小有名氣)
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