What is the design of the spring Pogopin derivative?types of electrodes in electrochemistry

　　(1) What is the design of the spring derivative? At present, the spring design mainly uses a widely used spring stress (stress is not force, but a pressure) and the deformation calculation formula is derived from material mechanics. It is very difficult to manufacture. As the design stress increases, many experience in the past no longer apply, such as when the design stress of the spring increases, the spiral angle increases It is necessary to adopt precision analysis technology. The current method of widely used is the finite element method.

　　(2) The characteristic of the car suspension spring is that in addition to sufficient fatigue life, its permanent deformation should be smaller, that is, the resistance to relaxation should be within the specified range, otherwise the body's center of gravity will be offset. At the same time, the impact of environmental corrosion on its fatigue life should also be considered. With the extension of the vehicle maintenance cycle, higher requirements have been put on the permanent deformation and fatigue life of the vehicle. Therefore, a high -precision design method must be adopted. The finite element method can predict the effects of spring stress on fatigue life and permanent deformation in detail, and can accurately reflect the relationship between material and spring fatigue life and permanent deformation.

　　(3) In recent years, the finite element design method of spring has entered a practical stage. It has more practical reports on the impact of spiral angle on spring stress, the relationship between finite element computing stress and fatigue life. The spring structure is simple, simple, and saves parameters that affect structure and performance. To this end, the designer adopted the analysis method, illustration method, or diagram analysis method to seek the optimal design plan early and achieved certain results. With the development of computing technology, the optimization design of non -linear planning by computer has achieved good results.

　　(4) Reliability design is a series of analysis and design technologies adopted to ensure the reliability of design products. The task is to make the design product achieve the prescribed reliability target value on the basis of predicting and preventing the product failure. It is supplemented and improved to traditional design methods. Spring design has made certain progress in the application of reliability technology, but further improves the development and accumulation of data.

　　(5) With the development of spring application technology, many new problems require designer attention and solution. For example, the impact of materials, pressure and spray treatment on fatigue and relaxation performance is difficult to accurately calculate in the design; depend on test data; the number of circles calculated according to the current design formula, the spring stiffness value is less than the design stiffness value. Therefore, in order to meet the satisfaction of satisfaction Design requirements need to reduce effective turns.

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