Welcome to Hebei haoda yihe machinery equipment co., ltd.
12 structural design criteria related to mechanical requirements
Release time:
2023-07-25
On March 3, Peng Xiaoming, secretary of the county party committee, Shi Dongsheng, deputy secretary of the county party committee, Liu Bin, director of the high-tech zone, and other government leaders came to our company to inspect the resumption of work, and in-depth guidance of the epidemic prevention and control work, to promote the orderly resumption of work and production of enterprises in-depth research. Do a good job of epidemic prevention and control to ensure the orderly recovery of production and operation Secretary Peng said that enterprises should strengthen confidence, and the county government with the same frequency resonance, without slack to do a good job of epidemic prevention and control, strictly implement the registration and observation and other measures, strictly prevent the input of sources of infection, strengthen the resumption of work and production personnel life guarantee, one mind, overcome difficulties, to ensure the orderly production and operation of enterprises.
metal components are safer under pressure than under tension, at least as safe. The yield point of
cast iron and its elongation are higher than those in tension, sometimes as high as 4 to 5 times. The mechanical properties of other brittle materials are similar, but metal members are not always safer in compression than in tension.
Because its load-bearing capacity depends not only on the material of the structure but also on its shape.
There are many slender rods in machinery, such as the screw of a jack, the connecting rod of an internal combustion engine and the screw rod of a lathe. These slender members cannot be designed according to the strength conditions.
to improve the stability of the pressure bar, the specific measures are:
(1) to increase the cross-sectional moment of inertia. The instability failure is manifested as bending failure, and the material is placed on the outer edge as much as possible.
(2) Reduce the length of the pressure bar. If the working conditions do not permit, the method of increasing the intermediate support can be adopted.
(3) Reinforces the restraint of the support. When connecting the pressure bar with its p member, it shall be rigidly connected or closely fit as much as possible.
(4) Optimal combination of section shape and constraint method.
compression rod is always unstable in the longitudinal plane with small stiffness. Therefore, the stiffness in each longitudinal plane should be the same or close to each other. When the supports at both ends of the compression rod are fixed ends or spherical hinges, it is more reasonable to use round or square. When the supports at both ends of the compression rod are column hinges, rectangular or I-shaped cross section should be adopted.
(5) Reasonable choice of materials. For the middle and small flexibility rod in the elastic-plastic stage, the use of high-strength steel can improve its stability; for the large flexibility rod, the high-strength steel can not improve its stability, so the economic ordinary steel should be used.
Key words:
Recommended News
Hebei Haoda Yihe Machinery Equipment Co., Ltd.
Mobile phone official website
View mobile phone official website
Copyright©2022 Hebei Haoda Yihe Machinery Equipment Co., Ltd.
