【摘要】：基于概率-區(qū)間混合不確定性模型及結(jié)構(gòu)可靠性分析方法,針對工程機(jī)械多關(guān)節(jié)柔性機(jī)械臂的振動可靠性進(jìn)行研究。根據(jù)機(jī)械臂不確定參數(shù)的信息完備程度,通過概率變量和區(qū)間變量對不確定參數(shù)進(jìn)行度量�；谌嵝员奂苡邢拊抡鏀�(shù)據(jù),構(gòu)建機(jī)械臂參數(shù)與結(jié)構(gòu)固有頻率關(guān)系的徑向基函數(shù)代理模型,進(jìn)而通過概率-區(qū)間混合可靠性分析方法對機(jī)械臂共振的失效概率進(jìn)行區(qū)間估計。最后將該方法應(yīng)用于實際產(chǎn)品,通過工程實例驗證了方法的有效性。
[Abstract]:Based on the probabilistic and interval mixed uncertainty model and structural reliability analysis method, the vibration reliability of flexible manipulator with multiple joints of construction machinery is studied. According to the completeness of the uncertain parameters of the manipulator, the uncertain parameters are measured by the probabilistic variables and the interval variables. Based on the finite element simulation data of flexible arm, the radial basis function agent model of the relationship between the mechanical arm parameters and the natural frequency of the structure is constructed, and then the failure probability of the manipulator resonance is estimated by the method of probabilistic and interval mixed reliability analysis. Finally, the method is applied to practical products, and the effectiveness of the method is verified by an engineering example.
【作者單位】： 湖南大學(xué)汽車車身先進(jìn)設(shè)計制造國家重點(diǎn)實驗室;中聯(lián)重科股份有限公司;
【基金】：國家自然科學(xué)基金資助項目(11172096,51222502)
【分類號】：TP241

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