本申请提出一种集机构设计、动力学分析、振动抑制、混合仿真建模和实验验证于一体的带锯条非线性振动动力学特性和振动抑制研究新思路：引入绝对节点坐标法、阀控缸张紧机构的非线性动特性理论、带锯条扭转约束形变理论、弹性力学哈密尔顿原理和振动解的多尺度分析原理，研究空载情况带锯条振动动力学特性；引入光滑粒子动力学分析理论、多锯齿负载的叠加耦合原理，锯痕及锯缝形成的正逆向建模原理和基于薄锯刃应力分布的磨损建模原理，研究金属带锯条上锯齿与工件间锯切耦合负载的动力学特性；引入带锯条上锯齿空间运动轨迹的投影展开原理，颤振发生与锯切负载瞬变的相伴性原理，研究负载情况带锯条振动动力学特性；引入带锯条主振模态预测、锯切负载辨识、恒功率化锯切负载的间接式振动抑制原理和衰减主振模态的直接式振动抑制原理，研究带锯条振动抑制方法。本项目研究紧密结合带锯行业的瓶颈性基础研究问题，具有较好的理论研究价值和工程实际应用意义。

In this project, based on mechanical design, dynamics analysis, vibration suppression, hybrid simulation modeling and experiments, a new research thinking for nonlinear vibration dynamics and vibration suppression in bandsaw is proposed.Firstly, bandsaw vibration dynamics without load is educed by introducing absolute nodal coordinate formulation, nonlinear dynamics of tensioning mechanism with valve and cylinder, torsion restraints deformation of the bandsaw, Hamilton principle and multi-scale analysis for oscillatory solutions.Secondly, sawing load dynamics between sawteeth and workpieces is studied by introducing smooth particle hydrodynamics method, mechanism of sawing load with multi-teeth, forward and reverse modeling for saw traces and kerfs formation, wear modeling based on stress distribution of bandsaw blade.Thirdly, vibration dynamics of bandsaw with load is researched by introducing projection expansion of sawteeth space motion trajectory, relationship between bandsaw flutter and transient sawing load.Finally, the method of bandsaw vibration suppression is addressed by introducing main vibration mode prediction of bandsaw, sawing load identification, indirectly vibration suppression with balancing sawing load and directly vibration suppression by restraining main vibration modes.Concerning the "bottleneck" of basic research problem in bandsaw, the proposed project has preferable theoretic signification and engineering foreground.