基于全局响应面算法的Q235B钢的Johnson-Cook模型参数最优

This study investigates the mechanical properties of Q235B steel through quasi-static tests at both room temperature and elevated temperature.The initial values of the Johnson-Cook model parameters are determined using a fitting method.The global response surface algorithm is employed to optimize and calibrate the Johnson-Cook model parameters for Q235B steel under both room temperature and elevated temperature conditions.A simulation model is established at room temperature,and the simulated mechanical performance curves for displacement and stress are monitored.Multiple optimization algorithms are applied to optimize and calibrate the model parameters at room temperature.The global response surface algorithm is identified as the most suitable algorithm for this optimization problem.Sensitivity analysis is conducted to explore the impact of model parameters on the objective function.The analysis indicates that the optimized material model better fits the experimental values,aligning more closely with the actual test results of material strain mechanisms over a wide temperature range.

绩效工资制度下公立医院医务人员个人所得税筹划

为了更好地适应社会的发展,事业单位收入分配制度开始进行不断的改革,其中的医疗卫生事业单位中的绩效工资制度便从属于改革之内容,从而推动了事业单位对内部收入分配制度的广泛改革。基于此,本文就公立医院中绩效工资制度下医务人员筹划个人所得税方面进行了分析,旨在为相关的工作者提供参考意见,进一步健全激励绩效工资分配的机制。