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Big Daishowa's outstanding tool development relies on cutting force measurement technology from Kistler

Application Cases

The role of the bolt is to tighten, and it is conceivable that the preload (clamping force) is the most important measurement parameter. However, the pre-tightening force can not be directly measured like torque. It can only be measured by indirect method. The measuring method is also varied. The traditional method includes strain gauge method and washer sensor method, while ultrasonic wave is used to measure the pre-tightening force compared with other methods. The method does have many advantages, and can achieve non-destructive measurement, real measurement, information preservation, and cost saving.
Practice and theory are the left and right legs of human knowledge learning. Recently, Xiao Yan discovered that the left leg of the domestic fastening industry has become more and more sturdy, but the right leg is somewhat thin, and the theory is more or less lacking, including Xiao Yan himself. It's time to arm yourself with theory, and there is a book that will hold you armed.

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Bolt is one of the commonly used couplings in various equipment design. It has the advantages of simple structure, convenient disassembly and assembly, easy adjustment, etc. It is widely used in aerospace, automobile and various engineering structures.
The analytical method of traditional mechanics checks the strength of bolts, mainly by applying the principle of force decomposition and translation, solving the mechanical equilibrium equation, and idealizing and formulating by means of theoretical and empirical formulas. The integrity of the connecting member, the path of force transmission, and local refinement of the component (such as stress concentration, stress distribution) are not considered.
Through the finite element method, the overall modeling and local refinement can make up for the defects of traditional mechanical analysis. The application of finite element in bolt strength check is more and more extensive.

We provide Computer aided engineering (CAE)

  • Computer aided design (CAD) 
  • Finite element analysis (FEA, FEM)
  • Screw-Designer Software for analytical calculation



Cases for Finite element analysis (FEA, FEM)

Numerical Assessment of Relaxation Behavior
Simulation of Self-tapping Screw
Covering Sensitivity for Axial Loading
Difference in load deformation behaviour of a two bolt joint