In order to simplify the solution procedure, the direct modal perturbation method based on Ritz-function expansion is applied for determining the modal characteristics of fiber reinforced plastics-reinforced concrete (FRP-RC) composite beam.
A reasonable Ritz-vector expansion,based on the idea of mode perturbation,is chosen and the principle of minimum potential energy is used to determine the solution to the modal characteristics of fiber reinforced plastics-reinforced concrete(FRP-RC) composite beam.
The static stress, rigidity, mode characteristics of the vehicle frame were discussed, at the same time, the dynamic characteristics were analyzed and studied including response analyzed and fatigue life analyzed, these data were compared with the experiment results.
This superelement method has been used to predict the principal normal mode characteristics of an ideal model of a 5,000 ton large hatch barge with 1224 degrees of freedom. The calculated numerical values are compared with test results obtained through system identification by hammer testing and measuring in—plane vibration by Moire method. The degree of agreement is satisfactory
The mode characteristics of arc\|gravity dam is studied under the mutual effect of the dam foundation and the dynamic water pressure, the dynamic stress,displacement,acceleration of arc\|gravity dam under earthquake are computed with time\|history analysis.
Using the interface of ANSYS and Pro/E, the gear model is actually imported to ANSYS software. Then obtains the static and modal characteristic by using the finite element analysis technology, obtains the strain diagram and modal parameters.
In order to verify whether the rationalization and reliability of the automobile front door's structure design can meet the technique's demands or not, a finite element model of an automobile's front door is built in this paper, and different characters, such as stress distortion and mode characteristic in different possible work conditions of the front door is calculated.
This paper, based on the effect of three equivalent system methods, selects a better method from them and takes a certain third-generation fighter's longitudinal mode characteristic as an example to calculate and verify the method.
The mode characteristic of a Francis turbine in water is studied by the method of three-dimensional FEA considering FSI in this paper,and the natural frequency and modes of the turbine are carried out.
By means of numerical simulation,basic deformations and deformations under dynamic response were investigated through the analysis of mode characteristic and the study of dynamic response characteristic under the pulsed excitation.