Xin Zhang^1,2, Xitao Zheng^1,2, Tiantian Yang³, Mingyu Song^1,2, Yuanyuan Tian⁴, Leilei Yan^1,2,*

The International Conference on Computational & Experimental Engineering and Sciences, Vol.30, No.3, pp. 1-1, 2024, DOI:10.32604/icces.2024.011277

Abstract Composite joints are widely used in machinery industries such as aviation, aerospace, and marine, where they transfer main loads as lightweight connectors. Recently, 3D printing with continuous fibers has relieved the required molds in composite manufacturing process and given flexibility to the design of robust composite joints. However, how the curved paths and variable hatch spaces affect the mechanical properties and failure modes of 3D-printed single-bolt composite joints with continuous fibers remains undisclosed. In this study, 3D printing has been introduced to fabricate three types of continuous fiber-reinforced single-bolt composite joints with different paths, including… More >

Xin Xue^1,2,3, Haitao Li^1,2,3,*, Rodolfo Lorenzo⁴

Journal of Renewable Materials, Vol.12, No.4, pp. 869-894, 2024, DOI:10.32604/jrm.2024.029602 - 12 June 2024

Abstract This review summarizes the existing knowledge about the mechanical properties of bamboo scrimber (BS) in literature. According to literature reviews, the strength of BS under different load modes is affected by a series of factors, such as the type of original bamboo, growth position, resin content, treatment method and density. Therefore, different production processes can be adopted according to different requirements, and bamboo scrimbers can also be classified accordingly. In addition, this review summarizes the changes in different factors considered by scholars in the research on the mechanical properties of BS, so that readers can More > Graphic Abstract

Shidong Nie^1,2, Wei Fu^1,2, Hui Wang^1,2,*, Di Wu^1,2,3, Min Liu^1,2, Junlong Wang⁴

Journal of Renewable Materials, Vol.11, No.3, pp. 1401-1423, 2023, DOI:10.32604/jrm.2022.023446 - 31 October 2022

Abstract Moso bamboos have attracted excessive attention as a renewable green building material to the concept of sustainable development. In this paper, the 20 bolted Moso bamboo connection specimens with embedded steel plates and grouting materials were designed according to connection configurations with different bolt diameters and end distance of bolt holes, and their bearing capacities and failure modes were analyzed by static tension tests. According to the test results of all connectors, the failure modes of the specimens are divided into four categories, and the effects of bolt diameter and bolt hole end distance on More >

Pengyu Chen, Cunbao Zhao^*, He Yao, Junliang Li

CMES-Computer Modeling in Engineering & Sciences, Vol.134, No.3, pp. 2057-2071, 2023, DOI:10.32604/cmes.2022.022394 - 20 September 2022

Abstract Multiple failure modes tend to be identified in the reliability analysis of a redundant truss structure. This identification process involves updating the model for identifying the next potential failure members. Herein we intend to update the finite element model automatically in the identification process of failure modes and further perform the system reliability analysis efficiently. This study presents a framework that is implemented through the joint simulation of MATLAB and APDL and consists of three parts: reliability index of a single member, identification of dominant failure modes, and system-level reliability analysis for system reliability analysis… More > Graphic Abstract

Shidong Nie^1,2,*, Song Ran^1,2, Di Wu^1,2,3, Jieyu Chen^1,2, Hui Wang^1,2, Qike Wei⁴

Journal of Renewable Materials, Vol.10, No.2, pp. 487-510, 2022, DOI:10.32604/jrm.2022.017275 - 30 August 2021

Abstract The Moso bamboo, a renewable green building material used in various new green buildings, have received extensive attention with the promotion of the concept of green buildings. To explore the mechanical properties of Moso bamboo connections with external clamp steel plates, the 16 specimens were designed by changing the bolt diameters and the end distances of the bolt holes. Their static tension tests were conducted to investigate bearing capacities and failure modes of different connection configurations. Based on test results, three failure modes of these connections were obtained, including the shear failure of bolt shank, More > Graphic Abstract

Yun Zhao, Shi Yan^*, Jiale Jia

CMES-Computer Modeling in Engineering & Sciences, Vol.126, No.3, pp. 1251-1274, 2021, DOI:10.32604/cmes.2021.013478 - 19 February 2021

Abstract In this study, the pyramidal lattice stitched foam sandwich composite materials were manufactured by integrating top and bottom panels with pyramidal lattice core to overcome the weak interface between the core and the skins of the sandwich structure. The influence of the reinforcing core rods on the mechanical properties including compressive, shear, and three-point bending performances of the foam sandwich composite materials were revealed through theoretical analysis and comparative experiments. The theoretical predictions were consistent with the experimental results. Compressive test, shear test and three-point bending test were performed. The experimental results show that the… More >

Yin Yang¹, Xiaoyan Cao¹, Zhiqiang Wang^1,*, Zhijun Liang¹, Jianhui Zhou^2,*

Journal of Renewable Materials, Vol.7, No.10, pp. 957-965, 2019, DOI:10.32604/jrm.2019.07558

Abstract The out-of-plane shear properties of cross-laminated timber (CLT) substantially influence the overall mechanical properties of CLT. Various testing methods and theories related to these properties have recently been developed. The effects of the number of layers (three and five layers) and testing method (short-span three- and four-point bending tests) on the out-of-plane shear properties of CLT were evaluated. The out-of-plane shear strength values were calculated based on different theories for comparison. The failure mode in the short-span four-point bending (FPB) method was mainly the rolling shear (RS) failure in the cross layers, indicating that the More >

Gengmu Ruan¹, Haibei Xiong^1,*, Jiawei Chen¹

Structural Durability & Health Monitoring, Vol.13, No.2, pp. 227-246, 2019, DOI:10.32604/sdhm.2019.04743

Abstract In this paper, bending performance and rolling shear properties of cross-laminated timber (CLT) panels made from Canadian hemlock were investigated by varied approaches. Firstly, three groups of bending tests of three-layer CLT panels with different spans were carried out. Different failure modes were obtained: bending failure, rolling shear failure, bonding line failure, local failure of the outer layer and mixed failure mode. Deflection and strain measurements were employed to calculate the global and local modulus of elastic (MOE), compared with the theoretical value. In addition, a modified compression shear testing method was introduced to evaluate More >

Xixiang Chen¹, Yu Chen^{2, *}, Kang He², Fernando Palacios Galarza³

Structural Durability & Health Monitoring, Vol.12, No.4, pp. 299-322, 2018, DOI:doi:10.32604/sdhm.2018.04625

Abstract In order to studythe web-crippling behavior of aluminum hollow section subjected toconcentrated load, sixteen aluminum hollow tubes withdifferent loading conditions, bearing lengthandweb slenderness ratioswere tested. This paperalso discusseda method to improve the web crippling strength of the aluminum hollow sections byinfilling the mortar as composite section, and four aluminum composite sections were tested. The literature has reported lots of web crippling tests, butthere isfew reportson web crippling behavior of aluminum composite sections. Interior-Ground(IG) and End-Ground(EG)loading conditions were adopted, with the specimens placed on the ground to simulate the load of floor joists. Specimens were also… More >

Xuwen An^1,2, Jianguo Hou³, P.D. Gosling⁴, Dong Dai⁵, Long Xiao⁶, Xiaoyi Zhou⁷

CMES-Computer Modeling in Engineering & Sciences, Vol.107, No.1, pp. 1-25, 2015, DOI:10.3970/cmes.2015.107.001

Abstract Studies on the theory of structural system reliability includes identification of main the failure modes and calculation of inclusive failure probabilities for the structural system. The efficient and accurate identification of failure modes in structural systems is difficult and represents a key focus for research in system reliability. The fundamental theory of the branch and bound algorithm for stage critical strength is reviewed in this paper. Some deficiencies in this method are highlighted. Corresponding approaches to overcome these deficiencies are proposed. Calculated system reliability solutions to the classical model, a truss with 10 elements, indicate More >