Results 31 to 40 of about 3,331,715 (353)

Simulation for stability of a beam-mass based high-resolution MEMS gravimeter

Materials & Design, 2022
In this paper, stability and mechanistic simulations for a four-beam-mass-based MEMS gravimeter were conducted, and guidelines for the gravimeter design were proposed.
Guigen Ye, Xuejun Fan, Luke M. Middelburg, Brahim El Mansouri, René H. Poelma, Guoqi Zhang   +5 more
doaj   +1 more source

ANALYSIS OF PLASTIC BIFURCATION FROM AXISYMMETRIC BUCKLING MODE TO DIAMOND BUCKLING MODE IN MODERATELY THICK CYLINDRICAL SHELLS

Doboku Gakkai Ronbunshu, 1998
軸圧縮力を受ける比較的厚肉の円筒殻は塑性域で最初, 座屈モードの局所化により軸対称のいわゆる提灯座屈が生ずるが, 変位制御で載荷を継続するとダイヤモンド座屈モードに変化することが実験的に観察されている. ここでは, 厳密な塑性分岐解析によりこのような塑性座屈モードの変化の過程を解析した. 解析結果として, ダイヤモンド座屈モードは, 軸対称座屈モードの局所化による提灯座屈発生後に塑性分岐により生ずること, 周方向の座屈波数は径厚比が大きいほど多いこと, さらに, ダイヤモンド型モードへの変化にともない局部的なひずみ集中度が大きく増加するため延性破壊による亀裂発生にもつながる可能性もあることなどが判明した.
Yoshiaki Goto, Chonghou Zhang
openaire   +2 more sources

Buckling Analysis of Thin-Walled Circular Shells under Local Axial Compression using Vector Form Intrinsic Finite Element Method

Metals, 2023
The buckling failure of thin-walled circular shells under local axial compression is common in engineering. This study uses the vector form intrinsic finite element (VFIFE) method to investigate the buckling behavior of thin-walled circular shells under ...
Wenliang Ma, Zihan Sun, Han Wu, Leige Xu, Yong Zeng, Yanxing Wang, Guangyin Huang   +6 more
doaj   +1 more source

Localized Perturbation Load Approach for Buckling Design of Thin-Walled Steel Cylindrical Shells under Partial Axial Compression

Metals, 2023
A thin-walled steel cylindrical shell is a common engineering structure that has an efficient load-carrying capacity. This structure is more easily subjected to partial axial compression loads in application, and buckling is the main failure mode ...
He Ma, Peng Jiao, Huangyang Xu, Xinshuang Li, Zhiping Chen   +4 more
doaj   +1 more source

Geometric Optimization and Mechanical Performance Enhancement of Auxetic Structures for High‐Impact Applications Through Fused Deposition Modeling

Advanced Engineering Materials, EarlyView.
This study explores the mechanical performance of three auxetic structures, identifying a re‐entrant‐star hybrid as the most effective for impact absorption. Finite element simulations and experiments demonstrate significant gains in energy absorption and flexural strength after geometric optimization. This study investigates the mechanical performance
Malik Hassan, Manjusri Misra, Alexander Bardelcik, Stefano Gregori, Amar K. Mohanty   +4 more
wiley   +1 more source

Multimodal Mechanical Testing of Additively Manufactured Ti6Al4V Lattice Structures: Compression, Bending, and Fatigue

Advanced Engineering Materials, EarlyView.
In this experimental study, the mechanical properties of additively manufactured Ti‐6Al‐4V lattice structures of different geometries are characterized using compression, four point bending and fatigue testing. While TPMS designs show superior fatigue resistance, SplitP and Honeycomb lattice structures combine high stiffness and strength. The resulting
Klaus Burkart, Jonas Schmidt, Anastasiya Toenjes, Johanna Eisenträger   +3 more
wiley   +1 more source

Multi-Mode Buckling Analysis of FGM Channel Section Beams [PDF]

Materials, 2020
The interactive buckling phenomenon in thin-walled channel section beams is investigated in this paper. This study deals with medium length beams made of the step-variable functionally graded materials (FGM) which consists of aluminum and titanium layers.
Zaczynska, Monika, Kazmierczyk, Filip
openaire   +2 more sources

Rheocasting versus Die Casting: An Insight into the Low‐Cycle Fatigue Behavior of AlSi7Mg0.6

Advanced Engineering Materials, EarlyView.
The study compares rheocast lightweight components with high‐pressure die cast materials regarding microstructure and fatigue behavior. Rheocast process offers higher efficiency due to lower casting temperatures. Despite some microstructural differences, both processes show similar strengths (yield strength 125 MPa, tensile strength 240 MPa).
Julia Richter, Thomas Wegener, Andreas Schilling, Martin Fehlbier, Thomas Niendorf   +4 more
wiley   +1 more source

Buckling Modes of Cold-Formed Steel Columns [PDF]

International Journal of Engineering and Technology, 2013
The goals of this study are to understand different buckling modes, determine the buckling mode and maximum buckling capacity of the built-up C-channels, and evaluate the AISI-2001 Specification. For these goals, the following was conducted: 1) different buckling modes of cold-formed steel columns were investigated; 2) previous research on built-up ...
Thomas H.-K. Kang, Kenneth A. Biggs, Chris Ramseyer   +2 more
openaire   +1 more source

Fabrication of Multifunctional FeSi Gyroid Lattice Composites via Additive Manufacturing and Polymer Infiltration

Advanced Engineering Materials, EarlyView.
A two‐step approach combining laser powder bed fusion of FeSi electrical steel with Bakelite infiltration enables the fabrication of multifunctional gyroid lattice composites. The resulting structures exhibit high strength, magnetic anisotropy, and complete polymer infiltration, demonstrating a simple and scalable route toward lightweight, mechanically
Angelo F. Andreoli, Mayumi A. Nakahashi, Vitor E. Pinotti, Felipe O. C. Bernardo, Lidiane C. Costa, Francisco G. Coury, Ronei C. de Oliveira, Adilson J. A. de Oliveira, Carlos E. H. Ventura, Piter Gargarella   +9 more
wiley   +1 more source