Temperature and Stress Evaluation during Three Different Phases of Friction Stir Welding of AA 7075-T651 Alloy by Kareem N. Salloomi, Furat I. Hussein, Sanaa N. M. Al-Sumaidae

“…The current study performs an explicit nonlinear finite element simulation to predict temperature distribution and consequent stresses during the friction stir welding (FSW) of AA 7075-T651 alloy. …”
Get full text

Solvability of a Model for the Vibration of a Beam with a Damping Tip Body by M. Basson, M. de Villiers, N. F. J. van Rensburg

“…The proofs are based on existence results for a general linear vibration model problem, in variational form. Finite element approximation of the solution is discussed briefly.…”
Get full text

Solvability of the Brinkman-Forchheimer-Darcy Equation by Piotr Skrzypacz, Dongming Wei

“…Furthermore, the finite element approximations to the flow profiles in the fixed bed reactor are presented for several Reynolds numbers at the non-Darcy’s range.…”
Get full text

Dynamics of Vertical Axis Wind Turbines (Darrieus Type) by A. F. Abdel Azim El-Sayed, C. Hirsch, R. Derdelinckx

“…A computing package that combines finite element methods for evaluating the resonance frequencies and modes of turbine subcomponents (blade, tower and shaft) together with the aerodynamic calculations for forces and moments taking into consideration the dynamic stall as well as the dynamic response is developed. …”
Get full text

Vessel-Bridge Collision Reliability Assessment Based on Structural Dynamic Analysis by Fu Tao, Ren Xiaoqian, Wang Kai

“…This method combines the method of moments with nonlinear dynamic finite element analysis, which can enhance the efficiency of calculating failure probability.…”
Get full text

A Computational Study of an Implicit Local Discontinuous Galerkin Method for Time-Fractional Diffusion Equations by Leilei Wei, Xindong Zhang

“…We propose, analyze, and test a fully discrete local discontinuous Galerkin (LDG) finite element method for a time-fractional diffusion equation. …”
Get full text

Measuring. Monitoring. Management. Control by V.S. Volkov, S.N. Bazykin, V.A. Bardin, K.S. Samohina, N.V. Volkova

“…Materials and methods. Using finite element modeling, the parameters of the corrugation were determined, which make it possible to double the sensitivity compared to a flat membrane having similar overall dimensions. …”

Decoupling the Stationary Navier-Stokes-Darcy System with the Beavers-Joseph-Saffman Interface Condition by Yong Cao, Yuchuan Chu, Xiaoming He, Mingzhen Wei

“…This paper proposes a domain decomposition method for the coupled stationary Navier-Stokes and Darcy equations with the Beavers-Joseph-Saffman interface condition in order to improve the efficiency of the finite element method. The physical interface conditions are directly utilized to construct the boundary conditions on the interface and then decouple the Navier-Stokes and Darcy equations. …”
Get full text

Updating Stiffness and Hysteretic Damping Matrices Using Measured Modal Data by Jiashang Jiang, Yongxin Yuan

“…A new direct method for the finite element (FE) matrix updating problem in a hysteretic (or material) damping model based on measured incomplete vibration modal data is presented. …”
Get full text

Coupling Vibration Analysis of Turbine Shared Support Rotor-Bearing System with Squeeze Film Dampers by Jiaqi Han, Guihuo Luo, Wei Chen, Fei Wang, Lulu Liu, Zhenhua Zhao, Gang Luo

“…The problem is addressed by means of experimental tests and the finite-element method. Based on the features of a turboshaft engine with a turbine shared support structure, a rotor-bearing test system with a shared support structure and squeeze film damper is designed, and a finite-element model of the test system is built based on Timoshenko beam elements. …”
Get full text

Temperature Load Parameters and Thermal Effects of a Long-Span Concrete-Filled Steel Tube Arch Bridge in Tibet by Tuo Shi, Jielian Zheng, Nianchun Deng, Zheng Chen, Xiao Guo, Shi Wang

“…Finally, the thermal effects in a CFST arch bridge were analysed using the finite element method. According to the results, the following recommendations were made: (1) the average temperature of concrete in the pipe after the formation of concrete strength should be used to calculate the closure temperature of CFST arch bridges in Tibet; however, the standard calculation formula was still applicable; (2) the daily average temperature in extreme weather should be taken as the maximum and minimum effective temperature; (3) we presented recommended values for the influence range and gradient temperature for a single large-diameter pipe; and (4) a refined finite element model that included the arch base should be used to verify the temperature effects during bridge design.…”
Get full text

Model Updating Method Based on Kriging Model for Structural Dynamics by Hong Yin, Jingjing Ma, Kangli Dong, Zhenrui Peng, Pan Cui, Chenghao Yang

“…Surrogate model has attracted considerable attention for saving computational cost in finite element model updating (FEMU). In this study, a model updating method using frequency response function (FRF) based on Kriging model is proposed. …”
Get full text

An Enhanced Plane Wave Expansion Method to Solve Piezoelectric Phononic Crystal with Resonant Shunting Circuits by Ziyang Lian, Shan Jiang, Hongping Hu, Longxiang Dai, Xuedong Chen, Wei Jiang

“…The PWE-PPC-C method is validated by Transfer Matrix method as well as Finite Element method. The dependence of band gaps on circuit parameters has been investigated in detail by PWE-PPC-C. …”
Get full text

Numerical optimization by the PFEMCT-SIF method of the crack propagation of a linear elastic material by Mohammed Bentahar, Noureddine Mahmoudi, Youcef Moulai Arbi

“…Introduction/purpose: This study investigates the influence of contour numbers surrounding the crack tip on stress intensity factors (SIFs) using the Propagation Finite Element Method Crack Tip Stress Intensity Factor (PFEMCT-SIF) approach. …”
Get full text

Investigating Cyclic and Pushover Performance of Different Metallic Yielding Dampers by Ali Mohammad Rousta, Sohrab Shoja, Masoud Amin Safaei Ardakani

“…In this research, different types of metallic dampers are compared using finite element simulation which is performed by means of ABAQUS package. …”
Get full text

Physicochemical and Vibration Analysis of Christmas Tree Four-Way Flange Failure under Fracturing Process by Zhaoming Zhou, Dawen Gong, Kelong Yang, Zhong Zeng, Zhou Xiao

“…In order to obtain the cause of failure, the chemical analysis, hardness testing, tensile property testing, and finite element structural dynamic analysis are used to analyze the failure of the cross connection. …”
Get full text

Study on the vibration characteristics and influence range of buried dam pipeline by Lihui Gao, Jing Xu, Shuai Xing

“…At the same time, by introducing the “finite element-infinite element” theory, a coupled finite element-infinite element model is established for the pipeline, levee, anchor piers, support piers, foundation, and infinite half-space. …”
Get full text

Nonlinear Pounding Analysis of Multispan and Simply Supported Beam Bridges Subjected to Strong Ground Motions by Hong-Yu Jia, Xian-Lin Lan, Nan Luo, Jian Yang, Shi-Xiong Zheng, Chao Zhang

“…To investigate the nonlinear impact effect of multispan simply supported beam bridges under strong earthquakes, firstly, the dynamic motion equation, the algorithm of its solution, and some pounding modelling methods are presented and the finite element model of a considered multispan simply supported railway beam bridge is established in the nonlinear finite element software of SAP2000 in which the primary nonlinear characteristics of the bearing and the impact element are considered herein. …”
Get full text

Research Progress on High-Intermediate Frequency Extension Methods of SEA by Jintao Su, Ling Zheng, Zhaoxiang Deng, Yuhan Jiang

“…Although the SEA basic theory can be extended by relaxing the hypothesis conditions or the analysis of the medium-frequency acoustics-vibration can be carried out using the finite element method (FEM) and SEA mixing method, there are still many challenges associated with these options. …”
Get full text

Modelling and Experimental Investigation of an Active Damper by Rafael Luís Teixeira, Francisco Paulo Lépore Neto, José Francisco Ribeiro

“…However, for the proper control design and system operation, the direct use of the finite element model becomes unviable due to its high computational time. …”
Get full text