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Mechanical Design The Most Important Factor In Determining Mechanical Properties
Oct 23, 2017

Mechanical design is an important part of mechanical engineering, is the first step of mechanical production, is the most important factor determining mechanical properties. The aim of mechanical design is to design the best machinery under various limited conditions (such as material, processing capability, theoretical knowledge and computational means, etc.) to make optimum design. Optimization design requires a comprehensive consideration of a number of requirements, generally: the best working performance, minimum manufacturing cost, minimum size and weight, the most reliable in use, the most low consumption and the least environmental pollution. These requirements are often contradictory, and their relative importance varies depending on the type and purpose of the machine. The designer's task is to weigh the situation according to the specific circumstances, to make the design machinery have the best comprehensive technical and economic effect. In the past, design optimization depended on the knowledge, experience and foresight of the designer. With the development of new disciplines such as basic theory of mechanical engineering and value engineering, system analysis, the accumulation of technical and economic data, and the popularization and application of computer, the optimization gradually abandons subjective judgment and relies on scientific calculation.

The design of industrial machinery, especially the mechanical design of the whole and the whole system, must be dependent on the relevant industrial technology and difficult to form an independent discipline. Therefore, agricultural machinery design, mining machinery design, pump design, compressor design, steam turbine design, internal combustion engine design, machine tool design and other professional mechanical design branch disciplines.

In the future, mechanical design will penetrate into semiconductor manufacturing, bioengineering, nanotechnology and robotics industries, while contributing to social development, and constantly improve themselves, so that the theory of further innovation.

(1) Further systematic implementation. From the system point of view, the mechanical products as a system or the whole, relying on computer technology, to achieve human, machine, environment and mutual coordination. Specifically, the system is decomposed into a number of subsystems, using a variety of modern design theory and methods, the pursuit of system optimization for the goal of coordination of the design and matching subsystems.

(2) Deepen intelligent design. With the progress and development of science and technology, the design should consider the factors of intelligence more and more. A large number of design content can be modeled to describe the various operating conditions of mechanical products, the model can be used to predict the performance of products, the rationality and optimization of design. For example, all kinds of vehicle performance evaluation intelligent decision-making system, gearbox design expert system, fault diagnosis system, etc. have been used in the development of new vehicles design.

(3) Pay more attention to green thought. Green design technology is to the product in its life cycle, according to environmental protection, the highest utilization of resources, the minimum energy consumption requirements to design technology. The designer from the whole cycle to consider the environmental attributes and basic attributes of the product, in the design always based on human physical and mental health, environmental protection and so on, at the same time, the design of the product can be recycled, the minimum damage to the environment.