Ke Liang^1,*, Zhen Yin¹, Zheng Li¹, Jiaqi Mu¹

The International Conference on Computational & Experimental Engineering and Sciences, Vol.26, No.2, pp. 1-2, 2023, DOI:10.32604/icces.2023.09020

Abstract Thermal-mechanical buckling has become one of the major failure modes of thin-walled structures which suffer from the high temperature service environment. These structures, such as plates and shells, are commonly involved in many branches of engineering, especially for the aerospace structures. Thermalmechanical buckling analysis plays an important role for lightweight design of aircrafts and launch vehicles, which significantly influences the load-carrying capability of the structure. Geometrical nonlinearities should be well considered to determine an accurate value of the critical buckling temperature/load as well as the postbuckling response.
In this work, a reduced-order method is proposed for geometrically nonlinear thermal-mechanical analysis… More >

Peidong Wu^1,*

The International Conference on Computational & Experimental Engineering and Sciences, Vol.26, No.1, pp. 1-1, 2023, DOI:10.32604/icces.2023.010491

Abstract The material anisotropy of an aluminum sheet alloy is determined by performing tensile tests at different angles with respect to the rolling direction (RD). To study the effect of pre-straining on the evolution of material anisotropy, a very wide sheet is stretched to different strains in the transverse direction (TD). The material in the central region is very close to a state of in-plane plane strain tension. Small tensile samples are cut from the central region of the pre-strained wide sample. Tensile tests are then performed on these small tensile samples. By comparing the differences in the flow stress vs.… More >

Zhelong He^1,*

The International Conference on Computational & Experimental Engineering and Sciences, Vol.26, No.1, pp. 1-1, 2023, DOI:10.32604/icces.2023.010452

Abstract This presentation introduces a concurrent topology and fiber-path optimization for continuous fiber composite under thermos-mechanical loadings. The optimization goal is to minimize the structural compliance of composite with thermos-mechanical coupling while satisfying volume fraction constraint, and ensuring the manufacturability by using continuous fibers and avoiding the appearance of over thin members. Level-set function is utilized to represent both shape boundary and fiber path. The zero isocontour of level-set function is updated using a shape sensitivity analysis for anisotropic composite, and fiber paths in shape are given by level-set functions determined from shape boundary. A level-set-based mesh evolution method is introduced… More >

Zhiyuan Liu¹, Jue Zhu^1,*

The International Conference on Computational & Experimental Engineering and Sciences, Vol.26, No.1, pp. 1-1, 2023, DOI:10.32604/icces.2023.09798

Abstract In order to study the dynamic mechanical properties at high temperature and high strain rate [1] of Q245R steel after corrosion, the electrochemical accelerated corrosion test by constant current method and the high strain rate tensile test at high temperature [2] by High Temperature Synchronous Hopkinson Tensile test device were carried out. The test results show that Q245R steel has obvious strain rate strengthening effect and temperature softening effect, and under certain conditions, temperature becomes the main factor affecting the material properties. In order to consider the heat treatment and corrosion effects, the traditional Johnson-Cook [3-4] constitutive equation was improved,… More >

Yuanzhe Li¹, Qiwen Liu^2,*, Lisheng Liu², Hai Mei²

The International Conference on Computational & Experimental Engineering and Sciences, Vol.26, No.1, pp. 1-1, 2023, DOI:10.32604/icces.2023.09500

Abstract The ablation of ultra-high-temperature ceramics (UTHCs) is a complex physicochemical process including mechanical behavior, temperature effect, and chemical reactions. In order to realize the structural optimization and functional design of ultra-high temperature ceramics, a coupled thermo-chemomechanical bond-based peridynamics (PD) model is proposed based on the ZrB₂ ceramics oxidation kinetics model and coupled thermomechanical bond-based peridynamics. Compared with the traditional coupled thermo-mechanical model, the proposed model considers the influence of chemical reaction process on the ablation resistance of ceramic materials. In order to verify the reliability of the proposed model, the thermomechanical coupling model, damage model and oxidation kinetic model are… More >

Xin Yan^1,*, Yu Chen¹

The International Conference on Computational & Experimental Engineering and Sciences, Vol.25, No.4, pp. 1-1, 2023, DOI:10.32604/icces.2023.09330

Abstract As a novel type of transition metal-based 2D materials, the most popular MXene (Ti₃C₂T_x，where T is a surface termination, typically O, OH, and/or F) has been endowed amazing prospects in versatile fields, including energy storage, electromagnetic interference shielding, electronics and photon-detectors. At the same time, the inevitable oxidation structure observed in experiment also affect the property of MXene. With the help of the surface termination and surface oxidation, MXene showed diversity magnetic, electronic and optical behavior. However, our knowledge about the fundamental thermal and mechanical properties of MXene is limited, especially regarding the effect of surface structure on the mechanical… More >

Haiming Zhang^1,2,*, Shilin Zhao^1,2, Zhenshan Cui^1,2

The International Conference on Computational & Experimental Engineering and Sciences, Vol.25, No.4, pp. 1-1, 2023, DOI:10.32604/icces.2023.08884

Abstract Particle-reinforced aluminum matrix composites (PRAMCs) have great potential for application in aerospace, automobile, defense, and electronics due to their high specific strength and stiffness and good resistance to wear and corrosion. Achieving a superior trade-off between the strength and ductility of PRAMCs necessitates an elaborative control of the microstructures, like the size and distribution of particles, as well as grain size, morphology, and texture of the matrix. The multiscale interaction between the particles and the matrix’s microstructure is insufficiently understood due to the lagging of high-resolved in-situ characterization. This work proposes a nonlocal physically based crystal plasticity (CP) modeling approach… More >

Jingyu Wang^1,#, Yongrou Zhang^4,#, Zuyue Lei¹, Junqi Wang¹, Yangming Zhao¹, Taolin Sun^3,*, Zhenyu Jiang¹, Licheng Zhou¹, Zejia Liu¹, Yiping Liu¹, Bao Yang¹, Liqun Tang^1,2,*

The International Conference on Computational & Experimental Engineering and Sciences, Vol.25, No.4, pp. 1-1, 2023, DOI:10.32604/icces.2022.08829

Abstract In surgical training applications and experimental research, brain tissues immersed in cerebrospinal fluid often involve very complex deformation and strain rate effects, which affects their reliability and stability. Thus, it is indispensable to develop a high-fidelity human brain tissue simulant material as a physical surrogate model to understand their mechanical behavior, such as traumatic brain injury (TBI). However, the reported simulant materials have not yet been able to compare and satisfy the above two mechanical properties. Here, we developed a novel composite hydrogel with brain tissue-like mechanical properties and investigated their mechanical behavior in a solution environment. The results demonstrate… More >

Lifeng Gan¹, Baoyin Zhu², Chao Ling^1,*, Esteban P. Busso¹, Dongfeng Li¹

The International Conference on Computational & Experimental Engineering and Sciences, Vol.25, No.3, pp. 1-1, 2023, DOI:10.32604/icces.2023.010397

Abstract Heat-resistant austenitic stainless steels are widely used in the final stages of superheater and reheater in in the new generation of fossil fuel power stations, due to their high creep strength. Similar weld joints, fabricated using gas tungsten arc welding, for connecting different components made of the heat resistant austenitic stainless steels usually suffer from premature failures at elevated temperature [1]. Experimental studies showed that cracks may nucleate in the heat affected zone or weld metal of the similar welded joints under service conditions. In order to reveal the physical origin of unexpected failures of the weld joints, a microstructure-based… More >

Shi Dai¹, Yanping Lian^1,*

The International Conference on Computational & Experimental Engineering and Sciences, Vol.25, No.3, pp. 1-1, 2023, DOI:10.32604/icces.2023.010175

Abstract In recent years, metal additive manufacturing (AM) has gained increasing attention from various industries. However, there are few studies on the thermal deformation behavior of additively manufactured metallic components, which is vital to pushing its applications’ boundary. In this work, we first experimentally investigate the mechanical behavior of AlSi10Mg produced by laser powder bed fusion under different temperatures and strain rates. A crystal plasticity finite element model is adopted to provide insights into the intrinsic deformation mechanisms. The model is validated by comparing it with the flow behaviors and dislocation evolutions observed in experiments at different conditions. The strain distributions… More >