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The objective of this work is to use the Finite Element Method (FEM) to simulate the performance of a PVDF transducer array to measure temperature gradients through the determination of phase shifts, i.e. time shifts of the waveform of the echo due to a change in the speed of propagation of ultrasound as a result of a change in temperature, they can be interpreted as phase shifts in the frequency...
Modal superposition analysis was used in the calculation of crankshaft dynamic strength and fatigue life based on rigid-flexible multi-body system dynamics analysis and finite element analysis, this paper verified the precision of crankshaft finite element modal by experiment modal analysis, resulted the position of max stress and dynamic variation during the engine working, calculated the dynamic...
This paper presents thermo-mechanical investigation results of a reconfigurable wafer-scale integrated circuit, the WaferIC™, dedicated to electronic systems prototyping. The proposed approach carefully selects materials combined with an active cooling mechanism to avoid critical localized thermal peaks and associated large thermal stresses. The performance of the approach was evaluated and tested...
Low back pain was paid more attention, due to cause a decline in the quality of life and great economic costs. There are many risk factors for low back pain using manual material handing, such as poor postures, excessive force and vibration, manual material handing is a high incidence of low back pain industry. This study analyzed the gravity torque, erector spinae muscle strength as well as the extrusion...
Based on the ANSYS software platforms, the structural vibration and noise of the truck cab structures have been systematically simulated and studied with test modal technology, the finite element and the boundary element methods in this text. First, modal analysis is made to obtain the structure's modal parameters. Then, the finite element modal is checked and verified by the test results. The dynamic...
This paper presents a study of spring-back in the free bending metal forming process, and the analytical model of free bending process is constructed. Different punch radius, die-lip width and sheet thickness are varied to study their effect on spring-back. Abaqus/Explicit is used to simulate the forming process, and Abaqus/Standard is used to simulate the spring-back process. The analysis shows that...
This paper described a spring roll-style retractable sampling arm with open cylindrical shell structure. It has small shrink volume, long expand path, low power consumption, large pushing force, and wide adaption, which can be widely used in mini-sampler in dangerous or ungetatable place to sample the rock, dust and other materials. Specifically, the design of the sampling arm is described, and finite...
Predictive modeling using fundamental physical principles is critical to developing new Thermal Interface Materials (TIMs) since it can be used to quantify the effect of particle volume fraction and arrangements on the effective thermal conductivity. In our prior work, we described a Random Network Model (RNM) that can efficiently capture the near-percolation transport in these particle-filled systems,...
The interface damage of single solder joint was simulated using cohesive zone model incorporated in finite element analysis. In this study, the solder/IMC/Cu pad interfaces models were constructed for the molecular dynamics simulation. The traction-separation law was derived when the interface model was subjected to a principle strain in one direction. The materials properties of cohesive element...
The static analysis of an given truck crane was conducted using FEA software ANSYS with the expectation of lightweight. The 3D geometric model of the crane frame was modeled by Pro/Engineer software, transported to the ANSYS software and analysised. Results show that the frame weight was reduced by 4.4%percent.
Simulations of carbon-fiber-reinforced plastics (CFRP) using the finite element method in electromagnetic tomography nondestructive evaluation systems are presented in this paper. Ansoft Maxwell 3D models describing the interaction of the sensors with both unidirectional and cross-woven plate samples are built and analyzed to show the CFRP orientations. A circular sensors array is designed and 400...
Electromagnetic pulses are fields of energy that they can damage electrical and electronic circuits at once. New technology of microelectronic circuits is sensitive to interference power. An intentional or inadvertent risk and unforeseen create irreparable damages, so that it is important to investigate electromagnetic interference from viewpoint: generation source, the effectiveness on?? electronic...
The tests date to characterize the rubber material constants as well as the hyperelastic material stability is discussed. The rubber material of engine mount is analyzed based on different forms of strain energy potentials using finite element analysis software ABAQUS. The method of using test data to calibrate material coefficients is obtained. Both of the hyperelastic constitutive law and the viscoelasticity...
In order to study the interactive action of local and overall buckling, a test program of cut-t struts was performed. Based on that, a nonlinear finite element model for interaction between local and overall buckling on singly symmetric section is made by using the general finite element software ANSYS. In the model, factors such as initial imperfections, geometric and material nonlinearity are considered...
Forming defects have an important impact on the forming quality of sheet metal. Based on finite element software, the process of multi-point stretch-forming was simulated. The creation of finite element model, the choice of material model, the establishment of boundary conditions and the treatment of contact friction and so on were carried out. With the changes of technical parameters, multi-point...
Dynamic interaction analysis of an end bearing pile and soil has been analyzed using Boundary Element Method coupled with the Finite Element Method. The system considered is an end bearing single pile embedded in soil laying on a bed rock. The bedrock is considered as a rigid material. The system is subjected to upward propagating harmonic shear wave. The displacement of the pile has to be found....
The plate specimen tensile test is a common material mechanical property test in practical engineering, but the gripping deviation of plate specimen will bring tensile test result an error. In this paper, a finite element model of aluminum alloy notched specimen is built and a static finite element analysis is carried on, the influence of the plate specimen tensile test gripping position deviation...
A precast, prestressed concrete girder with circular web openings allows building service systems (mechanical, electrical, communications, and plumbing) to cross the girder line within the memberpsilas depth, reducing a buildingpsilas floor -to-floor height and the overall height of the structure. These height reductions have the potential to improve the competitiveness of total precast concrete structures...
A circumferentially multi-pass butt-welded P91 steel pipe, typically used for high-temperature applications in power plants, has been numerically analysed to determine residual stresses, induced by the process of welding, as well as microstructural regions in the weld, caused by thermal cycles. The finite element (FE) method has been applied to simulate residual stresses generated in the weld region...
In this paper a multi-objective criterion function is introduced to maximize annual energy input (AEI) and minimize permanent magnet (PM) volumes in a permanent magnet synchronous generator (PMSG). First, a PMSG is designed and modeled analytically to achieve above mentioned targets. After that, effects of various generator parameters on the two above-mentioned objective functions are analyzed using...
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