CAJ | 학술논문

以桥式起重机主梁为研究对象，利用 Ansys Workbench 软件建立主梁参数化实体模型并进行结构力学分析，得到危险工况下的等效应力云图和位移变形云图，校核其强度和刚度均满足设计要求。运用 Workbench Design Explora －tion 优化模块对参数化后的主梁截面尺寸进行优化，选取主梁截面的尺寸作为输入参数，以危险工况下的最大等效应力、最大位移和主梁结构质量作为输出参数，进行实验设计。通过指定优化评定准则：即满足主梁结构强度和刚度，并使主梁结构质量最轻为评定准则进行优化设计，得出较好的3组候选设计点，通过比较选取最优设计点，并将其改变为当前设计点对原有模型进行重新生成并再次进行结构力学分析，最终达到减轻主梁自重，降低成本的目的。
이교식기중궤주량위연구대상，이용 Ansys Workbench 연건건립주량삼수화실체모형병진행결구역학분석，득도위험공황하적등효응력운도화위이변형운도，교핵기강도화강도균만족설계요구。운용 Workbench Design Explora －tion 우화모괴대삼수화후적주량절면척촌진행우화，선취주량절면적척촌작위수입삼수，이위험공황하적최대등효응력、최대위이화주량결구질량작위수출삼수，진행실험설계。통과지정우화평정준칙：즉만족주량결구강도화강도，병사주량결구질량최경위평정준칙진행우화설계，득출교호적3조후선설계점，통과비교선취최우설계점，병장기개변위당전설계점대원유모형진행중신생성병재차진행결구역학분석，최종체도감경주량자중，강저성본적목적。
With the overhead crane as the study object,the paper builds the girder parametric solid model with Ansys Workbench for structural mechanics analysis,and gets the equivalent stress nephogram and displacement deformation neph-ogram under dangerous conditions.Through verification,the model meets the requirements in strength and rigidity.Work-bench Design Exploration optimal module is employed to optimize the parameterized girder sectional dimension.The girder sectional dimensions are taken as the input parameters,and maximum equivalent stress,maximum displacement,and gird-er structure mass under dangerous conditions taken output parameters for experimental design.Based on the defined optimal evaluation criterion of minimum mass of the girder structure under the premise of meeting the structural strength and rigidity requirements,optimal design is performed to get three sets of candidate design points.The optimal design point is selected through comparison and taken as the current design point to regenerate the original model and perform the structural me-chanics analysis,for the purpose of reducing the self-weight of the girder and lowering costs.