Method for determining weak rods in truss structures of hoisting and conveying machinery
A technology for lifting and transporting machinery and truss structures, which is applied in special data processing applications, instruments, electrical digital data processing, etc. The effect of increasing market competitiveness
Inactive Publication Date: 2014-07-09
CHANGAN UNIV
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Abstract
The invention provides a method for determining weak rods in truss structures of hoisting and conveying machinery. By judging whether the rods reach critical conditions or not according to practical stress states of the rods, the problem that only part of the rods are checked without regard to bending moments of ends of the pressed rods in the prior art is solved. Practical stresses of all rods are extracted in binary iterative analysis in each time, whether each rod reaches the critical conditions or not is judged, stretch bent rods are judged according to strength theory, pressure bent rods are judged according to stability of the pressure bent rods, and the rods are repeatedly loaded until a certain rod or a certain batch of rods reaches the critical conditions. Therefore, using the method can determine positions of all weak rods, rod bearing conditions and the degree of each rod approaching to the critical conditions, design direction of local reinforcement of the truss structures is indicated, potential risks are eliminated at the design stage, and market competitiveness of products is improved.
Application Domain
Special data processing applications
Technology Topic
Strength theoryBending moment +7
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