Static-strength-based structural full-field lightweight quantitative evaluation method
A quantitative evaluation and static strength technology, applied in the direction of using stable torsion to test material strength, using stable tension/pressure to test material strength, and testing material hardness, etc. The effect of quantifying potential and improving material utilization
Active Publication Date: 2019-10-25
UNIV OF SHANGHAI FOR SCI & TECH
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Problems solved by technology
[0003] The technical problem to be solved by the present invention is: the existing lightweight design method cannot carry out quantitative lightweight evaluation of the whole field
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[0024] Below in conjunction with accompanying drawing, further elaborate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.
[0025] Take the torsion of a solid shaft under a torsional load as an example to further illustrate the present invention. The material of the shaft is 38B3 steel, the heat treatment is surface intermediate frequency quenching, the surface hardness is 57-62HRC, and the depth of the hardened layer with a hardness of 500HV is 4.8-8mm. The hardness of the core is ≤30HRC, and the size of the solid shaft is as follows figure 1 show...
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Abstract
The invention puts forward a static-strength-based structural full-field lightweight quantitative evaluation method, thereby avoiding a phenomenon that the full-field quantitative lightweight evaluation can not be carried out b the existing lightweight design method. According to the static-strength-based structural full-field lightweight quantitative evaluation method, a structural static strength field matches a structural stress field and thus structural full-field lightweight quantitative evaluation is realized. To be specific, according to highest stress distribution of the dangerous section of the structure, ideal static strength field distribution of the structural dangerous section is determined; and on the basis of structural heat treatment requirements, an end quenching curve ofthe material, and a strength-hardness conversion relationship, static strength distribution of the structural dangerous section is determined. With a stress-strength interference model, full-field lightweight quantitative evaluation of the structural dangerous section is performed.
Description
technical field [0001] The invention relates to the field of structural static strength design and static strength evaluation in mechanical design, and is applicable to the static strength design and static strength evaluation of black and nonferrous metal mechanical structures and parts. Background technique [0002] The existing lightweight evaluation method based on static strength only evaluates the static strength lightweight based on the strength requirements of the dangerous section, treats the static strength of the mechanical structure and parts as a whole, and only considers the relationship between the highest stress of the dangerous section and the overall static strength. The relationship between the highest stress at the point of danger and the strength of the whole are compared. The stress of the structure is the concept of the field and the local. The stress distribution of the structure and the dangerous section of the parts under the whole field can be accu...
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IPC IPC(8): G01N3/08G01N3/22G01N3/40
CPCG01N3/08G01N3/22G01N3/40
Inventor 卢曦王宏黄嘉炜刘汉光田磊
Owner UNIV OF SHANGHAI FOR SCI & TECH