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Mobile bridges are primarily to make span-crossing and form traffic path flexibly and rapidly. FRP (Fiber-reinforced polymer composite) is suitable for the construction of mobile bridge as its advantages of light-weight and high-strength. In this paper, the ANSYS optimization module is used to optimize the linear of the FRP bridge, in order to lose the weight of the bridge.
Deep drawing is an important sheet metal forming process in the industry. The deep drawing of irregular square cup was investigated in this paper. To predict the damage of irregular square cup, different blank hold forces and blank shapes were studied in the numerical model. The experiment was carried out with the optimized blank force holder and blank shapes, the crack and thickness distribution...
The simulation and construction of a novel ultrasonic transducer for medical application are presented. The process starts with the simulation, using the necessary components involved in the construction of the transducer. The Finite Element Method (FEM) was used as a software tool in the simulation. Once the simulation was ready the transducer was constructed. Some important aspects in the construction...
In breast conserving surgery clinicians may benefit from information from preoperative images (e.g. high quality dynamic contrast enhanced magnetic resonant image obtained in the prone position), by registering them to the supine patient on the operating table in the theatre. Due to large deformation involved between prone and supine, either non-rigid intensity-based mage registration methods or biomechanical...
Finite elements analysis (FEA) simulations showed that small strain shear modulus and the nonlinear behavior play roles in the changes of image contrast as the material deforms. The clinical relevance of this work is that nonlinear elasticity of the object being imaged may not only affect the image quality during strain imaging but might also provide information that can be used to differentiate tissues...
In this paper, analyzing the steering knuckle of the main operating conditions, the structural analysis of ultimate working conditions is studied by use of MSC. Patran/Nastran software for the steering knuckle. Based on the ADAMS software, the multi-body dynamics analysis of the suspension structure is completed, and the bearing load under the actual working conditions is obtained. Strength analysis...
Due to the high corrosion and chemical resistance, the fiber reinforced polymer( FRP) materials are increasingly being used for the tall slender thin-walled structure, such as smoking desulfuration absorber tower. The properties of this slender fiber reinforced polymer absorber tower are: the aspect ratio is 2.5 and the ratio of the wall thickness to its radius is taken to be 0.0038. So the seismic...
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...
Phononic crystals exhibit unique dynamic characteristics that make them act as tunable mechanical filters for elastic or acoustic wave propagation. The introducing of the idea of PCs in engineering structures provides a new technique for the control of vibration and noise. In this paper, basing on the Mindlin plate theory, the Timoshenko beam theory and the Bloch theorem, an efficient finite element...
Fatigue tests has been completed. A lot of bushing failed. In order to improve the effective lifetime of rubber bushing used in chassis, research the failure mechanism of rubber bushing, a finite element model of rubber bushing was build, and then simulated with FEM. The results showed that on the rubber bushing stress nephogram, the position of the maximum stress is just the place where the rubber...
Shrink flanging is a main fashion in rubber forming, which is a very important manufacture method in aircraft fabrication. Spring back of the part during unloading largely determines whether the part conforms to the die design dimensions and tolerances. A typical shrink flanging part is used to analyze the spring back control method. The finite element model is set to simulate the forming process...
It has been shown that recently proposed lumped-element-based cloak is not inherently broadband. More numerical results depicting scattering cross-section as well as the field (voltage) distribution for pulse excitation will be presented in the final paper. Also, the manufacturing of a cloak is in the progress and the experimental results will be presented in near future.
The motivation for this article is to investigate properties of finite periodical structures with resonant elements immersed in a conventional dielectric. It is well known that such combination could have the properties of complex material. Particularly our goal is to apply this kind of structure to design an antenna with a circularly polarized irradiated field and with a flat pattern in a chosen...
The modal analysis of three-dimensional resonator loaded with chiral material by using the finite element method has been proposed in this paper. The proposed FEM formulation has been verified with an analytical solution of spherical resonator filled with chiral material. The results of resonant frequency agree well with the results of analytical solutions. Another example of rectangular cavity loaded...
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...
In this paper, a high-low coupled two-scale finite element method (TSFEM) for thermo-elastic problem in composite with small periodic perforated configuration is proposed. Some finite element approximate errors corresponding to TSFEM are presented.
Based on the theory for small fields superposed on finite biasing fields, the finite element model of a high frequency, double-layer plate, thickness-shear vibration pressure sensor under biasing field is set up, and a biasing field finite element method (BFFEM) is proposed. Both ends of the piezoelectric plate, vibrating in thickness-shear mode, are subjected to bending moment and axial force, excited...
To lend more confidence to the engineers adopting the fracture mechanics approach in the study of delamination in IC packages, a series of studies is performed to investigate the interactions of multiple delaminations and the impact of the die edge. Finite element models are constructed and the energy release rate (ERR) of the crack tips calculated using the virtual crack closure method and J-integral...
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...
Cold-formed steel channel sections had been widely recognized as lightweight material and its application in construction industry seen to be unlimited because it has proven in minimizing the building cost while satisfying the required strength. This paper investigates the structural behavior of cold-formed steel channel columns (without or with stiffeners) subjected to axial thrust. Computer aided...
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