Development of 6-container container hydraulic bulging computer simulation system Shang Yanling Zhang Hui 2, Zhang Shihong Yuan Shijian 2, Wang Zhongren 21. Institute of Metal Research, Chinese Academy of Sciences, Shenyang 0006, China; 2. Computer Simulation System, School of Materials, Harbin Institute of Technology, main program Plastic nonlinear finite element program, specially developed pre- and post-processing programs. This paper mainly introduces the pre- and post-processing program design of the simulation system.
The nonlinear finite element method is an advanced tool for studying the process of forming large deformation metals. By this method, one can use less force parameter distribution. And through the current advanced software, the computer can intuitively understand the deformation process of the blank deformed body, so that people can obtain the data that can be obtained through a large number of ontology experiments. One can also use this method to understand the deformation tendency and location of the deformation of the blank and its manner. This can save a lot of money and labor in industrial production and scientific experiments, predict the experiment and production situation, guide the engineering design, process design and mold design. The design of the finite element simulation system is limited to include 1 step 1 data quasi-meter Meet with Nayong. In this paper, we have developed a special elastoplastic finite element main program for simulating spherical bulging. Secondly, the development of the matching spherical shell bulging process simulation front 耵 processing special software 1å©, 0410 called. The software button is a large module main program solver pre-processing module post-processing module and shape processing module. This paper mainly introduces the pre-processing software and shape processing software design. The pre-processing module function performs finite element calculation. Firstly, the structural model is discretized, and the spatial position of the following information nodes is given. The material properties of the structure and the boundary conditions And constraints; the meta-given constraints and boundary conditions directly generate the data files used by the analysis program. In the shape state, the user is required to input various data parameters to the sub-study system. The long film stomach required by the input system is directly separated from the model, so the structure is complicated. Discretization is successful, making design and analysis an organic whole.
1 pre-processing module, giving users great convenience and choice rights. First, raise a small household to deal with before the loss. The file name is required to input the loading curve. The program then asks the user to input the geometrical parameters such as the length of the long axis of the spherical container, the length of the spherical center, the thickness of the unit, and the number of petals. And whether the effects of welds and heat effects are considered.
If the weld is considered or the effects of material properties and geometry of the heat affected zone are taken into account, the user is required to separately input the material properties of the base metal and the geometry parameters of the weld. As for the node number coordinate constraint equation and the unit number loading side file, plus, the human foot's help is called, so the software is very readable.
Node, in the lower right corner of the screen will not show the overall number coordinates of the node 32. If the mouse hits a unit, the overall number of the unit and the overall number of the node in the unit will be displayed on the right side of the screen. The file generated by the pre-processing module has its own unique format. If the user opens, the pre-program processing module generates the file itself, according to its additional format, the finite element calculation of the 31 post-processing module is a large-scale scientific calculation. For the processing of output data, people have put forward the requirements of visualization, and the data is shaped or called visual processing. Enable people to directly see the distribution of the field. A straightforward judgment is made from the image to obtain useful conclusions.
Scientific computing visualization can be achieved at a level, corresponding to the post-processing of the processing method, 05 1. Magic Tracking 7屯, Shijia Turu. This article is issued, 1 processing 1; block clothing with 1. and function.
3.1 Main features of the post-processing module of the program. In the post-processing module of the program, the various physical quantities processed are displayed in the form of a shape. The result is a controllable viewing angle, which completely realizes the human-computer interaction function.
The general-purpose program post-processing module is a post-processing software that mainly processes the solid elements and takes care of the type elements such as the shell element, and has versatility.
The post-processing module also has the advantages of good interface fault tolerance and simple operation. For the convenience of the user, all selection menus and help information are in Chinese and can be operated with a mouse.
3.2 The main function of the post-processing module of the program The displacement processing function of the post-processing module mainly includes the total position and analysis of the special point curve of the displacement component.
The user is able to output displacements in one direction. The program post-processing module can use the method of adding color and drawing contours to shift the displacement in a certain direction to the total amount of displacement, and the module can complete the functions of the animation effect, the effect of the thickness change, and the like.
As the load changes, the displacement of each output point is constantly changing, so the shape of the object is constantly changing. The post-processing module can realize the overall shape of the object that cyclically displays each output step. What the user sees is that the shape of the object is constantly changing as the loading step changes. Thereby, the deformation process of the entire object can be easily obtained. Also, it can be used to observe the thickness variation of each cell between the balls. With this function, it is easy to observe the amount of thickness reduction of the spherical shell and the distribution on the casing. The module can also display the size change trend and the position of the extreme value of the object after the unloading.
For the displacement processing of a special point, the displacement curve of the node can be obtained by inputting the coordinate value of the special point. For the displacement processing of a special line, such as the arc where the weld is located, as long as the coordinate value of the curve is input, the corresponding displacement curve can be obtained.
The stress processing function of the post-processing module should be the stress component equivalent stress. It mainly deals with the stress in the warp direction of the warp direction. The elastoplastic zone and the ease of deformation can be handled according to the equivalent stress. According to whether the equivalent stress is small, the elastic weight is 4 points and the plastic is used. Kind, no, the equivalent stress range of the domain + domain. To the extent of the difficulty of small deformation.
Strain treatment! The strain treatment function of the post-sequence processing shuttle is similar to the stress treatment function, and the distribution of the strain is equivalent to the strain.
4 points preview preview using the pre-check function of the main program, generate a data file, and then call the analysis preview function to get the shape of the analysis part. If the node coordinates or the unit node number are wrong, it is easy to observe in shape. At the same time, the node number coordinate value. If the mouse hits a certain unit, the overall number of the unit and the total number of nodes in the unit will be displayed in the lower right corner of the screen.
4 Conclusion The software has been used, has a high degree of automation, has controllability versatility and a good man-machine dialogue interface.
2 Yuan Shijian, Wang Zhongren. A mortar for residual stress after bulging of a spherical tank, a pressure vessel, 1993104145.
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