混凝土泵车臂架刚柔耦合模型动力学仿真与优化
发布时间：2018-08-24 11:29
【摘要】：混凝土泵车目前是土建工地现场混凝土浇注中不可或缺的机械设备,是一种通过液压系统带动多节可折叠的臂架旋转,同时臂架带动输料管运动,可以连续均匀地泵送混凝土到指定位置进行浇注的专用车型。 文章主要以混凝土泵车的核心部件臂架系统为研究对象,以多体动力学理论、参数化分析、优化设计等理论为基础,对臂架系统刚性和柔性两种模型分别进行运动学、动力学分析；利用柔性模型,对变幅机构中受力影响较大的铰点位置进行优化,降低油缸最大受力；对优化后臂架系统进行强度分析,并结合动应力试验加以验证。 1.通过Pro/E、ANSYS与ADAMS三种软件的联合应用,建立了臂架系统刚性模型和刚柔耦合模型,对两种模型进行动力学仿真和结果比较,发现后者更符合臂架系统工作的实际情况,为臂架系统进一步分析奠定基础。 2.基于臂架刚柔耦合模型,利用ADAMS的优化模块对变幅机构油缸受力进行研究。建立了臂架系统参数化模型,对灵敏度较高的几个设计变量进行了坐标优化,达到了油缸最大受力明显降低的效果。 3.对臂架模型进行仿真,输出仿真时间内臂架的动载荷到有限元软件中,对臂架系统进行了强度分析,并通过动应力试验对有限元分析结果加以验证。
[Abstract]:At present, the concrete pump car is an indispensable mechanical device in the concrete pouring on the site of a civil construction site. It is a kind of folding arm rotation driven by hydraulic system, and at the same time, the boom can drive the movement of the feeding pipe. Can continuously and uniformly pump concrete to the designated location for pouring special vehicle. Based on the theory of multi-body dynamics, parameterized analysis and optimization design, the rigid and flexible models of the boom system are studied in this paper. Dynamic analysis; the flexible model is used to optimize the hinge position of the luffing mechanism, to reduce the maximum force of the cylinder, and the strength of the optimized boom system is analyzed and verified by the dynamic stress test. 1. Through the joint application of Pro/E,ANSYS and ADAMS, the rigid model and the rigid-flexible coupling model of the boom system are established. The dynamic simulation of the two models and the comparison of the results show that the latter model is more in line with the actual situation of the boom system. Lay the foundation for further analysis of arm system. 2. Based on the rigid-flexible coupling model of the arm frame, the stress of the oil cylinder of the luffing mechanism is studied by using the optimization module of ADAMS. The parameterized model of the boom system is established, and the coordinate optimization of several design variables with high sensitivity is carried out, which achieves the effect that the maximum force of the cylinder is obviously reduced. The model of boom is simulated and the dynamic load of boom is outputted into finite element software. The strength of boom system is analyzed and the results of finite element analysis are verified by dynamic stress test.
【学位授予单位】：扬州大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU646
本文编号：2200685
[Abstract]:At present, the concrete pump car is an indispensable mechanical device in the concrete pouring on the site of a civil construction site. It is a kind of folding arm rotation driven by hydraulic system, and at the same time, the boom can drive the movement of the feeding pipe. Can continuously and uniformly pump concrete to the designated location for pouring special vehicle. Based on the theory of multi-body dynamics, parameterized analysis and optimization design, the rigid and flexible models of the boom system are studied in this paper. Dynamic analysis; the flexible model is used to optimize the hinge position of the luffing mechanism, to reduce the maximum force of the cylinder, and the strength of the optimized boom system is analyzed and verified by the dynamic stress test. 1. Through the joint application of Pro/E,ANSYS and ADAMS, the rigid model and the rigid-flexible coupling model of the boom system are established. The dynamic simulation of the two models and the comparison of the results show that the latter model is more in line with the actual situation of the boom system. Lay the foundation for further analysis of arm system. 2. Based on the rigid-flexible coupling model of the arm frame, the stress of the oil cylinder of the luffing mechanism is studied by using the optimization module of ADAMS. The parameterized model of the boom system is established, and the coordinate optimization of several design variables with high sensitivity is carried out, which achieves the effect that the maximum force of the cylinder is obviously reduced. The model of boom is simulated and the dynamic load of boom is outputted into finite element software. The strength of boom system is analyzed and the results of finite element analysis are verified by dynamic stress test.
【学位授予单位】：扬州大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU646
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