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A numerical framework for underground structures in layered ground under inclined P-SV waves using stiffnessmatrix and domain reduction methods

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 1,   Pages 10-24 doi: 10.1007/s11709-022-0904-3

Abstract: The free-field responses are first obtained using the stiffness matrix method based on plane-wave assumptionsThen, the domain reduction method was employed to reproduce the wavefield in the numerical model of the

Keywords： underground structures     seismic response     stiffness matrix method     domain reduction method     P-SV waves    

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Identification of dynamic stiffness matrix of bearing joint region

Feng HU, Bo WU, Youmin HU, Tielin SHI

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 3,   Pages 289-299 doi: 10.1007/s11465-009-0064-3

Abstract: The paper proposes an identification method of the dynamic stiffness matrix of a bearing joint regionThe author deduces an identification model of the dynamic stiffness matrix from the synthetic substructuremethod.The dynamic stiffness matrix of the bearing joint region can be identified by measuring the matrix ofmatrix of the bearing joint region.

Keywords： frequency response function (FRFs)     dynamic stiffness     finite element     synthetic substructure method     joint    

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Nonlinear analysis of cable structures using the dynamic relaxation method

Mohammad REZAIEE-PAJAND, Mohammad MOHAMMADI-KHATAMI

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 1,   Pages 253-274 doi: 10.1007/s11709-020-0639-y

Abstract: The dynamic relaxation method (DRM) is an explicit procedure for analyzing these types of structures.To utilize this scheme, investigators have suggested various stiffness matrices for a cable element.

Keywords： nonlinear analysis     cable structure     stiffness matrix     dynamic relaxation method    

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Meshing stiffness property and meshing status simulation of harmonic drive under transmission loading

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 2, doi: 10.1007/s11465-022-0674-6

Abstract: The meshing forces and torsional stiffness of the HD are nonlinear with the torsional angle.

Keywords： harmonic drive     meshing flexibility matrix     meshing force     loading backlash     flexspline     contact analysis    

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Axisymmetric loading on nanoscale multilayered media

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 1,   Pages 152-164 doi: 10.1007/s11709-022-0895-0

Abstract: Each layer stiffness matrix is derived based on the general solutions of stresses and displacements obtained

Keywords： functionally graded layer     Gurtin–Murdoch surface elasticity     multilayered medium     size dependency     stiffnessmatrix    

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Investigating the influence of delamination on the stiffness of composite pipes under compressive transverseloading using cohesive zone method

Sattar MALEKI, Roham RAFIEE, Abolfazl HASANNIA, Mohammad Reza HABIBAGAHI

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 6,   Pages 1316-1323 doi: 10.1007/s11709-019-0555-1

Abstract: The effect of delamination on the stiffness reduction of composite pipes is studied in this research.The stiffness test of filament wound composite pipes is simulated using cohesive zone method.geometrical parameters including delamination size and its position with respect to loading direction on stiffnessAt first, finite element results for stiffness test of a perfect pipe without delamination are validateddirections and also its orientation with respect to loading direction on delamination propagation and stiffness

Keywords： delamination     composite pipes     stiffness test     cohesive zone method    

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Biophysical Regulation of Cell Behavior—Cross Talk between Substrate Stiffness and Nanotopography Review

Yong Yang, Kai Wang, Xiaosong Gu, Kam W. Leong

Engineering 2017, Volume 3, Issue 1,   Pages 36-54 doi: 10.1016/J.ENG.2017.01.014

Abstract:

The stiffness and nanotopographical characteristics of the extracellular matrix (ECM) influence numerousThe effects of stiffness and topographical cues on cell behavior have previously been reviewed, respectively; however, the interwoven effects of stiffness and nanotopographical cues on cell behavior have not beenHerein, we first review the effects of substrate stiffness and nanotopography on cell behavior, and then

Keywords： Extracellular matrix     Stiffness     Nanotopography     Adhesive ligands     Cell behavior    

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A dynamic model of mobile concrete pump boom based on discrete time transfer matrix method

Wu REN, Yunxin WU, Zhaowei ZHANG

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 4,   Pages 360-366 doi: 10.1007/s11465-013-0280-8

Abstract: A dynamics model of a mobile concrete pump boom is established based on discrete time transfer matrixmethod (DTTMM).The overall dynamic equation and transfer matrix of the model can be assembled by sub-structures A andThe displacement and rotation angle curves of the proposed method fit well with the ADAMS model.

Keywords： multi-body     mobile concrete pump boom     discrete time transfer matrix method (DTTMM)     kinematic     dynamic     tip    

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Mechanical design and analysis of a novel variable stiffness actuator with symmetrical pivot adjustment

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 4,   Pages 711-725 doi: 10.1007/s11465-021-0647-1

Abstract: Thus, this paper aims to design a novel variable stiffness actuator (VSA) that can provide safer physicalVSA follows the idea of modular design, mainly including a variable stiffness module and a drive moduleThe variable stiffness module transmits the motion from the drive module in a roundabout manner, makingAs the key component of the variable stiffness module, a stiffness adjustment mechanism with a symmetricalExperiment results show that the VSA stiffness is close to the theoretical design stiffness.

Keywords： variable stiffness actuator     variable stiffness module     drive module     symmetrical structure     double-deck    

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Risk Matrix Method and Its Application in the Field of Technical Project Risk Management

Zhu Qichao,Kuang Xinghua,Shen Yongping

Strategic Study of CAE 2003, Volume 5, Issue 1,   Pages 89-94

Abstract: This paper systematically introduces risk matrix and its application, which is one of the most popularAs a conclusion, this paper evaluates the usability of risk matrix when to be used to assess and mitigatetechnical project risks in China, and delivers a framework of risk matrix application in high-tech project

Keywords： risk matrix     risk management     project management    

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Experimental and theoretical investigations of the lateral vibrations of an unbalanced Jeffcott rotor

Ali ALSALEH, Hamid M. SEDIGHI, Hassen M. OUAKAD

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 4,   Pages 1024-1032 doi: 10.1007/s11709-020-0647-y

Abstract: The linear governing equation of the considered rotor is extracted by adopting the Lagrange method onThe dynamic features of the rotor system such as the linearized bearing induced stiffness are exclusively

Keywords： rotor-dynamics     Jeffcott rotor     lateral vibrations     Lagrange method     system-equivalent stiffness     sleeve bearings     oil film induced stiffness    

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The Fibrillar Matrix: Novel Avenues for Breast Cancer Detection and Treatment Review

Rasha Rezk,  Raquel Marín-García,  Annica K.B.Gad

Engineering 2021, Volume 7, Issue 10,   Pages 1375-1380 doi: 10.1016/j.eng.2021.04.024

Abstract: These fibers increase the mechanical stiffness of the tissue, which has long been used for tumor diagnosisWe also describe how biomaterial models make it possible to understand how the stiffness and viscosity

Keywords： Breast cancer     Tissue stiffness     Cancer metastasis     Cell migration     Bioengineered scaffold     Viscosity    

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a novel perforated ultrasonic vibration platform in the grinding of particulate-reinforced titanium matrix

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 1, doi: 10.1007/s11465-022-0730-2

Abstract: A modified apparent elasticity method (AEM) was proposed to reveal the influence of holes on the vibrationplatform was evaluated by the vibration tests and UVAG experiments of particulate-reinforced titanium matrixThe modified AEM, the finite element method, and the vibration tests show a high degree of consistency

Keywords： grinding     perforated ultrasonic vibration platform     vibration characteristics     apparent elasticity method    

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The Mathematics Model and Matrix Method of Complex Cocurrent Multi-Effect Evaporation

Ruan Qi,Chen Wenbo,Huang Shihuang,Ye Changshen

Strategic Study of CAE 2001, Volume 3, Issue 4,   Pages 36-41

Abstract: A new algorithm (iteration method combining with matrix method) is presented.new algorithm is which increases the convergent speed and stability, more efficient than the Newton methodand Broyden method.

Keywords： condensed water flash     extra vapor elicitation     cocurrent     multi-effect evaporation     mathematics model     matrixmethod    

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A fast compound direct iterative algorithm for solving transient line contact elastohydrodynamic lubrication problems

Jian LIU,Yuxue CHEN,Zhenzhi HE,Shunian YANG

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 2,   Pages 156-167 doi: 10.1007/s11465-014-0297-7

Abstract: First, by introducing a special matrix splitting iteration method into the traditional compound directiterative method, the full matrices for the linear systems of equations are transformed into sparsebanded ones with any half-bandwidth; then, an extended Thomas method which can solve banded linear systemsalgorithm increases computing speed several times more than the traditional compound direct iterative method

Keywords： elastohydrodynamic lubrication     transient     line contact     matrix splitting iteration method     the Thomas method    

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Title Author Date Type Operation

A numerical framework for underground structures in layered ground under inclined P-SV waves using stiffnessmatrix and domain reduction methods

Journal Article

Identification of dynamic stiffness matrix of bearing joint region

Feng HU, Bo WU, Youmin HU, Tielin SHI

Journal Article

Nonlinear analysis of cable structures using the dynamic relaxation method

Mohammad REZAIEE-PAJAND, Mohammad MOHAMMADI-KHATAMI

Journal Article

Meshing stiffness property and meshing status simulation of harmonic drive under transmission loading

Journal Article

Axisymmetric loading on nanoscale multilayered media

Journal Article

Investigating the influence of delamination on the stiffness of composite pipes under compressive transverseloading using cohesive zone method

Sattar MALEKI, Roham RAFIEE, Abolfazl HASANNIA, Mohammad Reza HABIBAGAHI

Journal Article

Biophysical Regulation of Cell Behavior—Cross Talk between Substrate Stiffness and Nanotopography

Yong Yang, Kai Wang, Xiaosong Gu, Kam W. Leong

Journal Article

A dynamic model of mobile concrete pump boom based on discrete time transfer matrix method

Wu REN, Yunxin WU, Zhaowei ZHANG

Journal Article

Mechanical design and analysis of a novel variable stiffness actuator with symmetrical pivot adjustment

Journal Article

Risk Matrix Method and Its Application in the Field of Technical Project Risk Management

Zhu Qichao,Kuang Xinghua,Shen Yongping

Journal Article

Experimental and theoretical investigations of the lateral vibrations of an unbalanced Jeffcott rotor

Ali ALSALEH, Hamid M. SEDIGHI, Hassen M. OUAKAD

Journal Article

The Fibrillar Matrix: Novel Avenues for Breast Cancer Detection and Treatment

Rasha Rezk,  Raquel Marín-García,  Annica K.B.Gad

Journal Article

a novel perforated ultrasonic vibration platform in the grinding of particulate-reinforced titanium matrix

Journal Article

The Mathematics Model and Matrix Method of Complex Cocurrent Multi-Effect Evaporation

Ruan Qi,Chen Wenbo,Huang Shihuang,Ye Changshen

Journal Article

A fast compound direct iterative algorithm for solving transient line contact elastohydrodynamic lubrication problems

Jian LIU,Yuxue CHEN,Zhenzhi HE,Shunian YANG

Journal Article