A5102860241- Composite Structure Analysis and Optimization
- Welding Techniques and Residual Stresses
- Advanced Surface Polishing Techniques
- Vibration and Dynamic Analysis
- Tunneling and Rock Mechanics
- Textile materials and evaluations
- Advanced Memory and Neural Computing
- 3D IC and TSV technologies
- Semiconductor materials and devices
- Sensorless Control of Electric Motors
- Electronic Packaging and Soldering Technologies
- Thermoregulation and physiological responses
- Infrared Thermography in Medicine
- Injection Molding Process and Properties
- Parallel Computing and Optimization Techniques
- Engineering and Environmental Studies
- Industrial Technology and Control Systems
- Powder Metallurgy Techniques and Materials
- Structural Load-Bearing Analysis
- Medicinal Plant Pharmacodynamics Research
- Fluid Dynamics and Mixing
- Microstructure and mechanical properties
- Mechanical Failure Analysis and Simulation
- Topology Optimization in Engineering
- Maritime Navigation and Safety
State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation
2022
China Aerospace Science and Industry Corporation (China)
2021-2022
Modular Genetics (United States)
2022
Beihang University
2006-2021
Diodes (China)
2019-2020
Jiangsu University of Science and Technology
2010-2019
Columbia College
2015
Shenyang Aerospace University
2013
Tsinghua University
2006-2012
Sichuan University
2011
In this study, a simple and unified process is established for transient vibration analysis of functionally graded material (FGM) sandwich plates in thermal environment. The temperature field, considered constant the plane, distributed along thickness with uniform, linear nonlinear profiles. For properties, both position dependence are taken into account. A further refined zigzag plate theory accounting partitioned transverse displacements piecewise-continuous in-plane developed within...
To investigate thermal protection effects of heat sinking vest with phase-change material (PCM), human thermoregulation model is introduced, and a mathematical transfer phase change has been developed the enthalpy method. The uniform energy equation constructed for whole domain, implicitly discreted by control volume finite difference Then in each node solved using chasing method to calculate tridiagonal equations, inner surface temperature PCM could be obtained. According vest, dynamic...
The nature of the droplet size variation and its effect on process behaviour were investigated for short circuit CO 2 arc welding using a power supply with constant voltage output. To obtain images record current transient waveforms in phase, an integrated experimental system was established by combining high speed charge coupled device camera based laser shadowing related optical dual channel analog/digital converter. transfer mode is defined as maximum diameter molten just before...
This article mainly analyzes the free vibration characteristic of sandwich piezoelectric beam under elastic boundary conditions and thermal environment. According to first‐order shear deformation theory Hamilton’s principle, thermo‐electro‐elastic coupling equations are obtained. Meanwhile, composed an array springs introduced, displacement variables external potential energy expressed as wave functions. By using method reverberation‐ray matrix integrate solve governing equations, a search...
Power consumption has become the major concern in neural network accelerators for edge devices. The novel non-volatile-memory (NVM) based computing-in-memory (CIM) architecture shown great potential better energy efficiency. However, most of recent NVM-CIM solutions mainly focus on fixed-point calculation and are not applicable to floating-point (FP) processing. In this paper, we propose an analog-domain CIM (AFPR-CIM) resistive random-access memory (RRAM). A adaptive dynamic-range FP-ADC is...
Tables are ubiquitous across various domains for concisely representing structured information. Empowering large language models (LLMs) to reason over tabular data represents an actively explored direction. However, since typical LLMs only support one-dimensional~(1D) inputs, existing methods often flatten the two-dimensional~(2D) table structure into a sequence of tokens, which can severely disrupt spatial relationships and result in inevitable loss vital contextual In this paper, we first...
In this paper, a composite strategy based on fractional order sliding mode control and disturbance observer are employed in PMSM vector system to suppress the chattering improve robustness performance. First, surface is designed with reference theory. Then, super-twisting algorithm hyperbolic tangent function introduced new reaching law. Besides, stability proved by Lyapunov theory Finally, using observers estimate compensate for uncertainties. Comparing traditional SMC method, simulation...
Gold wire bonding processes on Cu/low-K dies are simulated with two sequential processes: capillary lowering down and USG power bonding. The major purpose of this modeling is to verify one engineering fact in bonding: bonded ball shape has significant impact the IMC performance, i.e., bond quality. In study BBR defined as ratio height (BBH) diameter (BBD) regarded basic feature shape. simulation results indicate that at 25% highest appearance frequency tensile strain interface, decreases...
AbstractA melting model of wire electrode, which gives expression to the effect welding current i(t) and extension / on quantity especially quantitative relationship between electrode width initial arc pulse for waveform controlled short circuit CO2 welding, is developed using least square method instantaneous values current, are sampled recorded in real time during actual process. And then, an investigation control molten droplet size carried out by adjusting at prophase, such that energy...
In order to solve the problems of large overshoot, slow response and insufficient anti-interference ability traditional speed PI controller, sliding mode variable structure controller is introduced into high frequency voltage injection system. this paper, a second-order based on super-twisting algorithm. A saturation function with boundary layer vector control system permanent magnet synchronous motor (PMSM) instead controller. At same time, rotor position estimation by method are...
Reinforced rib is used to strengthen the rigidity of thin-walled casing structure , inhibit vibration effectively. In this paper, Finite Element Method simulate typical reinforced structure. Changing positions and geometric parameters such as sizes, then calculate stiffness weight ratio dynamic response, at same time ,make a comparison. The result shows that: case with rib, tensile bending were increased, but presented in different differents; Under frequencies excitation force load, because...