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pendulum
- 模拟双摆在重力场中的运动。摆杆由两段长分别为l1和l2 的刚性杆构成,质量分别为m1和m2 ,两杆之间连接无摩擦的铰链,摆锤的质量为M。可研究(不要求每个部分完全分析清楚):1.同样的杆长不同的初始位置摆的运动2.杆长改变时摆的运动3.改变摆和杆的质量对摆运动的影响4.考虑空气阻尼的影响-Simulate double pendulum motion in the gravitational field. The pendulum consists of two lengths of l1 an
ode
- 此代码是用4阶龙克库塔方法求解二阶差分方程的钟摆问题,仿真了阻尼,非阻尼,有外部驱动,无外部驱动,相空间轨迹等内容。-This code is a 4-order Runge Kutta pendulum method to solve the problem of second order differential equations, simulated damping, non-damping, external drive, no external drives, phase space
gradient-methods-and-newton-method
- 最速下降法和牛顿法,用最速下降法求解无约束问题: min f(x)和用阻尼牛顿法求解无约束问题: min f(x)等-Steepest descent method and Newton method, with the steepest descent method for unconstrained problem: min f (x) and unconstrained problems with damping Newton Method: min f (x), etc.
steepest-descent--and-Newton
- function[x,val,k] dampnm(fun,gfun,hesse,x0) 功能:用阻尼牛顿法求解无约束问题:min f(x) 输入:x0是初始点,fun,gfun,hesse分别是目标函数值,梯度,hesse矩阵的函数 输出:x,val分别是近似最优点和最优值,k是迭代次数-The function/x, val, k dampnm (fun, gfun, Hesse, x0) function: with damped Newton method f
颤振matlab程序说明书
- 该计算程序可以对无固定约束碰撞振动系统在激励力作用 下的系统响应进行计算,模拟系统动态响应,并自动判断颤振发生情 况,记录不同参数组合(阻尼比,质量比,恢复系数,间隙,频率比) 情况下系统的响应数据,输出发生颤振的参数组合数据。(The program can be used to study the impact force of a vibro impact system with no fixed constraint The system response is calculat