21.3.9. Guides for Reliability Analysis
In order to explain the reliability analysis, let’s consider the simple problem shown in Figure 21.110. Suppose that the mean values of two random variables with normal distributions are (5.0, 5.0) and their standard deviations are (1.0, 1.0) respectively.
Figure 21.110 Reliability analysis problem
Let’s represent the above mathematical problem in RecurDyn. As RecurDyn always require a dynamic model. First, let’s create a dummy model such as a simple pendulum. Also, set the end time as 0.1 to reduce the computational time. Now, one can define two random variables from the Parametric Values and set their values as 5.0, respectively.
Figure 21.111 Parametric values defining for random variables
Then, one can define the limit state function \((x_{1}^{2}+x_{2}^{2})\) by using Expression.
Figure 21.112 Expressions defining for limit state functions