This tutorial was created using ANSYS 7.0 The purpose of this tutorial is to show the steps involved to perform a simple transient analysis. The simple cantilever beam is used in all of the Dynamic Analysis Tutorials. We need to establish initial conditions (the condition at Time = 0). Since the equations for a transient dynamic analysis are of second order, two sets of initial conditions are required; initial displacement and initial velocity.
In other words, we must resolve our step size such that we will have 20 discrete points per period of the highest mode frequency. Here is where the use of load step files comes in handy. The multi flexible body dynamics following time history curve shows our load steps and time steps. Transient dynamic analysis is a technique used to determine the dynamic response of a structure under a time-varying load.

Cases where such effects play a major role are under step or impulse loading conditions, for example, where there is a sharp load change in a fraction of time. The Mode Superposition Method: This method requires a preliminary modal analysis, as factored mode shapes are summed to calculate the structure's response.
For an explanation on Master DOFs, see the section on Using the Reduced Method for modal analysis. In ANSYS, transient dynamic analysis can be carried out using 3 methods. Since an ideal impulse force excites all modes of a structure, the response of the beam should contain all mode frequencies.

This will specify a time step size of 0.001 seconds to be used for this load step. Let's assume the mass of 6086 kg is bolted to the beam so it never comes off and there is no cable snap to be concerned with, and the only cycles you care about are the bumps in the road.
If inertia effects are negligible for the loading conditions being considered, a static analysis may be used instead. Note that for the reduced method, a constant time step is required throughout the time range. For most problems, one need not go further than Reviewing the Reduced Results as the response of the structure is of utmost interest in transient dynamic analysis.

We can easily change a few values in these files and re-run our whole solution from these load case files. Set a time of 0 for the end of the load step (as shown below). After the application of the load, we track the response of the beam at discrete time points for as long as we like (depending on what it is that we are looking for in the response).