This study proposes a new microcantilever design with a rectangular hole at the fixed end of the cantilever that is more sensitive than conventional ones. A commercial finite element analysis software ANSYS is used to analyze it. The Stoney equation is first used to calculate the surface stress induced moment, and then applied to the microcantilever free end to produce deflection. The stress an...

An effort made towards the performance improvement for an XY micromanipulator featuring parallel architecture and flexure hinges has been presented in this paper. Through the implementation of four steps evolution of the original structure, a new manipulator with decoupled motion is finally obtained, which owns an enlarged workspace and eliminated stiffening and buckling phenomena. The merits o...

This paper presents the numerical modeling of a plate structure containing bonded piezoelectric material. Hamilton’s principle is employed to derive the finite element equations using the mechanical energy of the structure and the electrical energy of the piezoelectric material. Then, a numerical model is developed based on Kirchhoff’s plate theory. A computational program is implemented for an...

As a key part of the power machine, unmanned aerial vehicle (UAV) impeller is widely used in aerospace field, and it plays a very important role in the national defense industry. Impeller in the work of higher speed, centrifugal force and aerodynamic force effect on the impeller at the same time, so that the impeller is easy to failure, a serious impact on the use of performance and life of the...

In this paper, a fully coupled vibro-acoustic finite element model (FEM) is developed to characterize the structural and acoustic coupling of a flexible thin shell by a cylinder-like cavity. The combined integral-modal approach is used to handle the acoustic pressure inside the cavity. Based on the modal proposed, the impact excitation effect on the vibro-acoustic behavior of the coupled system...

This paper is focused on the analysis of stress-strain and displacement for compressive load on the fibrereinforced composite laminates. Three different orientations of fibers are analyzed with and without the circular cut-outs. Also different dimensions of circular cut-outs are applied on the laminates at different compressive loading conditions. This analysis is carried out using the finite e...

Arrays of microcantilevers are increasingly being used as physical, biological, and chemical sensors in various applications. To improve the sensitivity of microcantilever sensors, this study analyses and compares the deflection and vibration characteristics of rectangular and trapezoidal profile microcantilevers. Three models of each profile are investigated. The cantilevers are analyzed for m...

In this study, ANSYS finite element software is used to simulate the temperature and stress field in the laser powder deposition process. The model is used to determine the effect of the deposition pattern on the final stress distribution. Four deposition patterns are defined to cover the same area: long bead, short bead, spiral in, and spiral out. The results show that the deposition pattern s...

Loads and working conditions of the trapezoidal cross-section of 36 m span crane beam can be analyzed by finite element method. Firstly, analysis of the stress and deformation is completed under the dangerous condition of crane beam based on the ANSYS software; secondly, find out the stress concentration and fatigue crack sensitive area of the bearing; finally, capture the position of fatigue c...

Commercial finite element software generally includes dedicated numerical models for the nonlinear response of concrete under loading. These models usually include a smeared crack analogy to account for the relatively poor tensile strength of concrete, a plasticity algorithm to facilitate concrete crushing in compression regions and a method of specifying the amount, the distribution and the or...