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Wenxiang Xu, Jianjun Shi and Hao Zhang
Building a new tunnel adjacent to an existing tunnel has become a common means of transformation in engineering. Existing tunnels are prone to some deterioration, such as cavities and cracks under long-term traffic load. This kind of deterioration tunnel...
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Peng Wang, Xuegeng Chen and Haojun Wen
In order to solve the problem of high straw content in recovered residual film and the low rate of qualified straw crushing in combination with a front-mounted cotton-straw-crushing device, the cutting and crushing mechanisms of cotton stalks were studie...
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Cheng-Wei Hung, Ying-Kuan Tsai, Tai-An Chen, Hsin-Hung Lai and Pin-Wen Wu
This study used experimental and numerical simulation methods to discuss the attenuation mechanism of a blast inside a tunnel for different forms of a tunnel pressure reduction module under the condition of a tunnel near-field explosion. In terms of the ...
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Navya Gara, Velmurugan Ramachandran and Jayaganthan Rengaswamy
The present work investigates the impact behaviour of Al 2024-T3 alloy using FEM analysis performed through LS DYNA software. Johnson?Cookvisco-plastic model is used to study the ballistic impact resistance of target Al alloy impacted by a rigid steel cy...
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Kristoffer Aune Brekken, Aase Reyes, Torodd Berstad, Magnus Langseth and Tore Børvik
Sandwich panels have proven to be excellent energy absorbents. Such panels may be used as a protective structure in, for example, façades subjected to explosions. In this study, the dynamic response of sandwich structures subjected to blast loading has b...
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Jungwhee Lee, Keunki Choi and Chulhun Chung
Cable-stayed bridges are infrastructure facilities of a highly public nature; therefore, it is essential to ensure operational safety and prompt response in the event of a collapse or damage, which are caused by natural and social disasters. Among social...
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Carlos Moure-Guardiola, Ignacio Rubio, Jacobo Antona-Makoshi, Álvaro Olmedo, José Antonio Loya and Marcos Rodríguez-Millán
New threats are a challenge for the design and manufacture of modern combat helmets. These helmets must satisfy a wide range of impact velocities from ballistic impacts to blunt impacts. In this paper, we analyze European Regulation ECE R22.05 using a st...
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Borja Valverde-Marcos, Ignacio Rubio, Jacobo Antona-Makoshi, Anoop Chawla, José Antonio Loya and Marcos Rodríguez-Millán
Brain injury resulting from improved explosives devices (IEDs) is identified as a challenge for force securities to improve protection equipment. This paper focuses on the mechanical response of explosive ordnance disposal (EOD) helmet under different bl...
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This study presents a new analytical model on the dissipation process of the initial total energy of the hemi-cylindrical shell subjected to the explosive blast load. The analytical formulation has been established using the energy method. The analytical...
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Djilali Beida Maamar, Ramdane Zenasni
Pág. 140 - 145
The main purpose of the present investigation was to determine the damages generated by the low velocity impact by mean of the finite element method. The commercial transient finite element package LS-dyna used to model the effect of slug impactor induce...
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Harsha Cheemakurthy, Zuheir Barsoum, Magnus Burman and Karl Garme
The current study focuses on the impact loading phase characteristic of thin first year ice in inland waterways. We investigate metal grillages, fibre reinforced plastic (FRP) composites and nature-inspired composites using LS Dyna. The impact mode is mo...
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Samar Momin, Holger Lovon, Vitor Silva, Tiago Miguel Ferreira and Romeu Vicente
Adobe construction represents 5.3% of the total Portuguese building stock according to the latest National Housing Census. The distribution of these adobe buildings is scattered across the country, with higher density in the central region and in Algarve...
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Djilali Beida Maamar, Zenasni Ramdane
Pág. 142 - 151
The main purpose of the present investigation was to determine the damages generated by the low velocities with the help of the experimental method (Impact by a drop test) and the finite element method. The commercial transient finite element package LS-...
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Jan Jepkens, Philipp Müller, Hendrik Wester, Sven Hübner, Simon Wehrmann and Bernd-Arno Behrens
In the aviation industry, a large number of processes are not digitalised. Simultaneously, many special processes are used in production, such as incremental bending. In order to model and efficiently design multi-stage processes with methods such as FEM...
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Guang Liang, Chaoji Zhou and Yuxiang Liu
This study established finite-element models via LS-DYNA software to predict the critical velocity of Ti spray particles under different collision velocities and preheating temperatures. Particle deformation, collision temperature, and bonding types of t...
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Hong Lin, Chang Han, Lei Yang, Hassan Karampour, Haochen Luan, Pingping Han, Hao Xu and Shuo Zhang
The collision between the pipe legs of jacket platforms and bypassing ships is of great concern for the safety assessment of platforms. Honeycomb structures have been widely used owing to their unique deformation and mechanical properties under dynamic i...
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Gokhan Tunc, Mohammed Moatasem Othman and Halit Cenan Mertol
Structural frame systems that consists of concrete-encased-steel-embedded composite columns and reinforced concrete beams are typically used in mid-rise to tall buildings. In order to understand their overall structural behavior, a total of 12 frame mode...
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Yi Zhang, Xiangru Zhang, Wenda Zhao and Feng Hu
In order to study the similarity law of penetration of concrete targets by shaped charges, penetration tests of concrete targets with different sizes of shaped-charge jets were carried out, and the prototype and the model projectiles met the similarity l...
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Konstantinos Tserpes, Kosmas Papadopoulos, Selen Unaldi and Laurent Berthe
An explicit 3D Finite Element (FE) model was developed in the LS-Dyna code to simulate the laser shock paint stripping on aircraft aluminum substrates. The main objective of the model is to explain the physical mechanisms of the laser shock stripping pro...
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Tongqiang Yu, Kun Liu, Jiaxia Wang and Zili Wang
The increase in global warming has secured the arctic region as a research hotspot, and the existence of ice floes and massive icebergs poses a great challenge to the navigational safety of polar ships. For the finite simulation of ship?ice collisions, a...
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