This discussion focuses on elastoplastic analysis. Elastoplasticity is the most common and the most thoroughly studied material nonlinear behavior. The elastic-plastic mechanical model of yield surface, plastic potential and flow law was established in the early 20th century. These theories have been widely used in the metal and soil plasticity fields, and have been compiled into numerical forming analysis tools, but plastic. Finite element hair has been widely used. Previous page next page A juicy, tender steak is aperfect steak experience,but the absence of a sharp,handy knife can really spoil the wxperience.We can provide customers all over the world with the best quality and comfortable bakelite handle steak knives,also we can customize different steak knives according to the living habits of different countries. Serrated Steak Knives,Serrated Steak With Bakelite Handle,Rivet Bakelite Handle Steak Knife,Bakelite Handle Steak Knife HONG TAO KITCHEN INDUSTRY CO.,LTD , https://www.htkitchenware.com
The plasticity theory of materials describing the extent of linear elasticity is composed of three important concepts:
1. Yield criterion (Von Mises yield criterion; Mohr-Coulomb and Drucker prager criteria)
2. Liquidity 3. Guidelines for hardening guidelines <br> <br> Third, the summary and outlook 3.1 summarizes the preliminary practical application of computer-aided modeling and auxiliary works by comparison with traditional design and manufacturing process, to truly appreciate the digital design, manufacture The superiority of the combination of CAD and CAE will greatly shorten the product development cycle, reduce costs, and effectively improve the market competitiveness of products. Computer-aided modeling and finite element method are advanced CAD/CAE technologies developed with the application of computer technology. They are widely used in scientific computing, design and analysis in various fields, and successfully solved many complicated designs. And analyzing problems has become an important tool in engineering design and analysis. The design includes the shape of a spacecraft component and the pressure forming analysis of thin-plate parts, which has practical significance in engineering. Learned several methods and theories of modeling, as well as the basic theory of finite element analysis, in order to better understand the application of modeling and finite element methods in engineering. Through the study and use of these methods, lay a solid foundation for better application and practice of computer-aided engineering in the future. It can more effectively and quickly design and manufacture products, reduce product development costs, improve product market competitiveness, and fully realize the digital design and manufacturing engineering of products.
3.2 Prospects The development and application of products cannot be separated from the cooperation of engineering designers, engineering management personnel and computer professionals. Only by combining the practical experience of design work with computer technology can the practicality and advancement of the system be improved. Therefore, we should cultivate a compound talent that understands both professional and computer skills, and enriches it into the design team and management team.
The development trend of CAD technology is mainly reflected in the following aspects:
Standardized CAD software should generally be integrated on a heterogeneous work platform. Only relying on standardization techniques can solve the environmental problems of CAD systems supporting heterogeneous cross-platform. At present, in addition to the CAD support software gradually realizes the ISO standard and the industrial standard, the standard component library and the standardized design method for the application have become the necessary contents in the CAD system, and the application direction of the rationalized engineering design is developed.
The open CAD system is currently widely installed on the open operating system Windows 95/98/2000/NT and UNIX platforms, providing a secondary development environment for end users, and even such environments can develop their kernel source code, allowing users to customize their own CAD system.
The integration of integrated CAD technology will be reflected in three levels: one is the generalized CAD function, CAD / CAE / CAPP / CAM / CAQ / PDM / ERP through a variety of integrated forms, become an enterprise integrated solution. The integration of new product design capabilities and modern enterprise management capabilities will become the focus of enterprise informationization; the second is to make the algorithms used by CAD technology, even functional modules or systems, into dedicated chips to improve the efficiency of CAD systems; Third, CAD is based on computer network environment to realize the integration of different places and heterogeneous systems among enterprises. Virtual design, virtual manufacturing, and virtual enterprise emerged at the integration level. For example, in the production process of General Motors of the United States, a large number of parts production and assembly are completed through the "virtual factory" and "dynamic enterprise alliance". The company is only responsible for the overall design and production of a few parts, and ultimately Complete the assembly of the product.
Overview of the application of CAD/CAE in the aerospace field (4)