2results about How to "Strong theoretical foundation" patented technology

The invention belongs to the technical field of material wear and fatigue life prediction, and discloses a material macro / micro fatigue fracture mechanics-based wear test device, which comprises a bottom plate (1) and a guide rail bracket (2) mounted on the bottom plate (1), a vertical guide rail (3) and a sliding block (4) which slides up and down along the guide rail (3) are arranged on the guide rail frame (2); a sliding block (4) is arranged on the base (1), a cantilever supporting column (6) is fixed on the sliding block (4), a loading device frame (5) is arranged on the cantilever supporting column (6), a loading and mechanical measurement integrated device (7) is assembled on the loading device frame (5), and a loading head (8) is arranged at the front end of the loading and mechanical measurement integrated device (7). The method is based on macroscopic and microscopic fatigue fracture mechanical models of materials, has a deep theoretical basis and wide applicability, and can be suitable for predicting the wear life of different organic materials.

The invention discloses a method for calculating the seismic action of a thin-waist floor system, and the method comprises the steps: taking the thin-waist floor system as a boundary, defining a structural tower as three parts: a weak side structure, the thin-waist floor system and a strong side structure, and obtaining the seismic action of each vibration mode of each part through a vibration mode decomposition response spectrum method; only the seismic action of the weak side structure is reserved, static analysis is conducted again, the seismic action effect of each vibration mode of the thin-waist floor system is obtained, CQC vibration mode combination is conducted, the seismic action effect of the vibration mode combination of the thin-waist floor system is obtained, and then the seismic design result of the thin-waist floor system is obtained through combination with the effects of other load working conditions; and finally, enveloping with a result of a traditional vibration mode decomposition reaction spectrum method to obtain a final aseismic design result of the thin-waist floor system. According to the method for calculating the seismic action of the thin-waist floor system, prerequisites and assumptions are few, dislocation deformation of structures on the two sides of the thin-waist floor system can be fully reflected, the unfavorable state of the thin-waist floor system is stimulated, the key problem of seismic design of the thin-waist floor system at present is solved, and engineering popularization is easy.