A5101738406- Structural Health Monitoring Techniques
- Advanced Measurement and Metrology Techniques
- Advanced machining processes and optimization
- Optical measurement and interference techniques
- Spacecraft Design and Technology
- Structural Analysis and Optimization
- Metallurgy and Material Forming
- Adhesion, Friction, and Surface Interactions
- Mechanical Engineering and Vibrations Research
- Iterative Learning Control Systems
- Space Satellite Systems and Control
- Silicone and Siloxane Chemistry
- Non-Destructive Testing Techniques
- Adaptive Control of Nonlinear Systems
- Mechanical stress and fatigue analysis
- Dynamics and Control of Mechanical Systems
- Gear and Bearing Dynamics Analysis
Beijing University of Technology
2008-2025
Tsinghua University
2004-2008
Investigating weak parts of the structure is one most important issues for improving stiffness machine tool. However, studies show that overcoming static deformation a challenging problem in practical structures. In present study, dynamic hammer testing approach applied to analyze cantilever tool with elastic support. Accordingly, new weakness index (WI) proposed identify an Then beam support numerically simulated and are modeled as reduction. this regard, finite element (FE) simulations...
A paraboloidal contact model with different axial crossing angles is established. The subjected to a combined action of normal and tangential loads. Based on the Hertzian theory, states under load are obtained by deriving equations. include critical interference values elastic phase, elastoplastic plastic phase. Under preload, stiffness verified finite element simulation. Simulation results indicate that displacements in deformation phase correspond well analytical solution Stresses strains...
Improving the rigidity of machine tools for identifying weak links structural stiffness is one important issues in mechanical engineering. In this paper, a new index proposed on cantilever structure tool to identify link. The frequency parameter obtained via vibration test method. method, FRF coefficient variation technique based curvature change used link stiffness. element weakening method that employs numerical examples beam and an elastic support simulate Compared with ratio (FRF_CR)...
Identifying the weak link of structural stiffness is one important issues in improving machine tool stiffness. Aiming at cantilever structure tool, this paper proposes a new index to identify The based on modal parameters obtained by vibration test method. In method, parameter matrix multiplying difference between reciprocal flexibility overall and structure. diagonal elements are extracted obtain index. And change adopted method element reduction used simulate stiffness, so as verify...