【新文速递】2024年12月9日复合材料SCI期刊最新文章

今日更新：International Journal of Solids and Structures 1 篇，International Journal of Plasticity 2 篇，Thin-Walled Structures 2 篇International Journal of Solids and StructuresA numerical study on the physical couplings of a geometrically linear thermo-chemo-mechanical modelJohannes Gisy, Alexander Dyck, Thomas Böhlkedoi:10.1016/j.ijsolstr.2024.113162几何线性热-化学-力学模型物理耦合的数值研究Physically coupled models are used in various research fields to solve problems concerning the interaction of solid materials with thermal, chemical or electrical boundary conditions. If beside the mechanical fields two or more additional fields (e.g. temperature and concentration) have to be taken into account, the determination of the impact on the mechanical fields (e.g. stress and yield strength) and the influence of the boundary conditions leads to an ambitious task. To deal with this issue, a thermo-chemo-mechanical model using a geometrically linear theory and a thermodynamically consistent derivation, is presented. The model is specified for linear elastic isotropic solid materials. A fully coupled set of partial differential equations is obtained. A Finite Element implementation using the User Element subroutine of ABAQUS is performed. A detailed description about the steps necessary to derive the corresponding element formulation is provided, thereby supporting the development of user-defined elements. The user-defined element is used for a series of simulations involving submodels with up to seven different combinations of active fields including thermo-chemical, thermo-mechanical and chemo-mechanical couplings. Three sets of boundary conditions are considered, leading to closed and open systems. This procedure, which is exemplified in one- and three-dimensional examples, enlightens strong and weak couplings and outlines the mechanical role on the interaction between the solid material and the chemical environment. Additionally, the implications of a geometrical linearization on the interpretation of the concentration is illustrated.物理耦合模型被用于各种研究领域，以解决固体材料与热、化学或电边界条件相互作用的问题。如果除了力学场之外，还必须考虑两个或更多附加场（如温度和浓度），那么确定对力学场（如应力和屈服强度）的影响以及边界条件的影响将是一项艰巨的任务。为了解决这一问题，提出了一个采用几何线性理论和热力学一致推导的热化学力学模型。该模型适用于线弹性各向同性固体材料。得到了一组完全耦合的偏微分方程。利用ABAQUS的User Element子程序实现了有限元。提供了关于导出相应元素公式所需的步骤的详细描述，从而支持用户定义元素的开发。用户定义的元素用于一系列涉及子模型的模拟，子模型具有多达七种不同的活动场组合，包括热化学，热机械和化学机械耦合。考虑了三组边界条件，导致了封闭系统和开放系统。这一过程以一维和三维的例子为例，揭示了强耦合和弱耦合，并概述了固体材料与化学环境之间相互作用的力学作用。此外，还说明了几何线性化对浓度解释的影响。International Journal of PlasticityA fully coupled rate- and temperature-dependent viscoplastic damage model for rock-like materials within the consistency frameworkJian Tao, Zhi-Jie Wen, Yu-Jun Zuo, Chen Wang, Jun Wang, Xing-Guo Yangdoi:10.1016/j.ijplas.2024.104211稠度框架下类岩石材料的完全耦合速率和温度依赖粘塑性损伤模型Civil structures in the deep lithosphere are frequently exposed to thermal environments resulting from geothermal gradients and dynamic disturbances caused by blasting, rockbursts, and earthquakes during construction and operation. In this paper, a novel thermo-viscoplastic damage model is proposed within the consistency framework to capture the rate- and temperature-dependent behavior of rock-like materials. By rationally designing the free energy and dissipation potential functions, all the constitutive formulations relating the coupled thermo-elasto-viscoplastic-damage processes can be derived following the thermodynamic principle. The main innovation of our study lies primarily in deriving a fully coupled Lagrange multiplier satisfying the classical form of rate-independent plasticity while still retaining the rate-dependent characteristics, thus enabling a consistent solution for the viscoplastic strain, temperature, and damage variables. To better improve the usability of our model, a hierarchical procedure is formulated for identifying all model parameters based on conventional laboratory experiments. By reproducing a series of uniaxial/triaxial compression, SHPB tests, and large-scale impact tests across a broad range of pressures, strain rates, and temperatures, the proposed consistency thermo-viscoplastic damage model is proven able to characterize realistically the coupled dynamic and thermal responses, as well as corresponding failure patterns of rock-like materials. Our calculations show that greater thermal damage intensifies the strain rate sensitivity of dynamic rock strength. Moreover, we have newly discovered the competitive relations among different dissipation processes during inelastic material deformation, highlighting the potential application of our model in predicting the temperature evolution in geological fault zones associated with distributed rock fracturing and pulverization.深层岩石圈中的土木结构在施工和运行过程中，由于地温梯度和爆破、岩爆、地震等引起的动力扰动，经常暴露在热环境中。本文在一致性框架内提出了一种新的热粘塑性损伤模型，以捕获类岩石材料的速率和温度依赖行为。通过合理设计自由能函数和耗散势函数，可以根据热力学原理推导出热弹粘塑性耦合损伤过程的所有本构式。本研究的主要创新之处主要在于推导出一个完全耦合的拉格朗日乘子，该乘子既满足速率无关塑性的经典形式，又保留速率相关的特性，从而实现粘塑性应变、温度和损伤变量的一致解。为了更好地提高模型的可用性，根据常规的实验室实验，制定了一个分层过程来识别所有模型参数。通过再现一系列单轴/三轴压缩、SHPB试验和大范围压力、应变速率和温度下的大型冲击试验，证明了所提出的一致性热粘塑性损伤模型能够真实地表征类岩石材料的耦合动力和热响应，以及相应的破坏模式。计算结果表明，较大的热损伤加剧了岩石动态强度的应变率敏感性。此外，我们还新发现了非弹性材料变形过程中不同耗散过程之间的竞争关系，突出了我们的模型在预测与分布岩石破裂和粉碎相关的地质断裂带温度演化方面的潜在应用。Mechanistic insights into twinning and detwinning during fatigue short crack growth in zirconium alloysWeifeng Wan, Yu Cheng, Chaitanya Paramatmuni, Xiaoxian Zhang, Vasilis Karamitros, Dawei Huang, Xiaojun Yandoi:10.1016/j.ijplas.2024.104210锆合金疲劳短裂纹扩展过程中孪晶和去孪晶的机理研究This study investigates fatigue short crack growth in Zircaloy-4 alloy, revealing phenomena of twinning and detwinning of { 10 1 ¯ 2 }< 10 1 ¯ 1 > tensile type at the vicinity of the crack. Twinning primarily occurs at the crack tip, crack deflection sites, and adjacent heterogeneities such as grain boundaries and triple junctions. Both twinning and slip contribute simultaneously to crack tip plasticity. The occurrence of twinning significantly increases the average stress and stored energy density at the crack tip, thereby accelerating short crack propagation. Twinning forms earlier in Z-type samples (with the texture pole aligned with the Z-direction) compared to Y-type samples, resulting in an earlier and more pronounced increase in crack growth rate. Detwinning is observed exclusively in Z-type samples, induced by substantial changes in stress distribution at the crack tip, likely due to dislocation pile-up at the twin boundary during crack growth.研究了锆合金的疲劳短裂纹扩展，发现裂纹附近出现了{10¯2}< 10¯1 >拉伸型的孪晶和去孪晶现象。孪晶主要发生在裂纹尖端、裂纹偏转部位和相邻的异质处，如晶界和三联结。孪晶和滑移同时影响裂纹尖端的塑性。孪晶的出现显著提高了裂纹尖端的平均应力和存储能量密度，从而加速了短裂纹的扩展。与y型样品相比，z型样品（织构极与z方向一致）的孪晶形成得更早，导致裂纹扩展速率的增加更早，也更明显。只在z型试样中观察到去孪晶，这是由裂纹尖端应力分布的实质性变化引起的，可能是由于裂纹扩展过程中孪晶边界处的位错堆积。Thin-Walled StructuresAxial Compressive Behavior of Circular Stainless Steel Tube Confined UHPC Stub Columns under Monotonic and Cyclic LoadingBing-Lin Lai, Yi-Ran Li, Jurgen Becque, Yu-Yang Zheng, Sheng-Gang Fandoi:10.1016/j.tws.2024.112830单调和循环荷载作用下圆形不锈钢管受限UHPC短柱的轴压特性A novel type of composite column consisting of an ultra-high performance concrete core confined by a stainless steel tube (SS+UHPC column) was investigated. The system is characterized by excellent corrosion resistance, aesthetic appearance, high axial capacity and pronounced ductility. An experimental programme comprising 14 SS+UHPC stub columns was carried out, covering both monotonic and cyclic loading. The main parameters varied in the experiments were the column diameter, the tube thickness and the loading scheme (monotonic or cyclic). The resulting load-displacement curves, failure modes, strain characteristics, axial capacities, confining pressures, stiffness degradation and ductility indices were thoroughly analyzed. The applicability of current empirical formulae in predicting the confined strength of UHPC in SS+UHPC columns was also examined, and found to be inadequate. Therefore, a new equation linking the confining pressure to the confined strength of UHPC was developed. Based on this, a design equation to quantify the axial capacity of SS+UHPC columns was presented.研究了一种由不锈钢管约束的超高性能混凝土芯组成的新型复合柱（SS+UHPC柱）。该系统具有优良的耐腐蚀性，美观的外观，高轴向容量和显著的延展性。实验方案包括14根SS+UHPC短柱，涵盖单调和循环加载。试验中变化的主要参数是柱径、管厚和加载方案（单调加载或循环加载）。对得到的荷载-位移曲线、破坏模式、应变特征、轴向承载力、围压、刚度退化和延性指标进行了深入分析。对现有经验公式在预测SS+UHPC柱的UHPC约束强度方面的适用性进行了检验，发现存在不足。据此，建立了围压与抗压强度的关系式。在此基础上，提出了量化SS+UHPC柱轴向承载力的设计方程。Mechanical Performance of Reinforced Hybrid Periodic-Multicell Thin-Walled Structures in Sandwich Applications: A ReviewShijun Song, Chao Xiong, Junhui Yindoi:10.1016/j.tws.2024.112832夹层结构中增强杂化周期性多细胞薄壁结构的力学性能研究进展Periodic-multicell thin-walled structures (PMTWSs) are extensively applied in aerospace, marine, and construction industries. In recent years, the use of reinforced materials (RMs) for enhancing hybrid sandwich structures with PMTWS cores has garnered considerable research attention. To this end, cutting-edge studies on the quasi-static mechanical performance (QSMP) of RM-enhanced PMTWSs and corresponding sandwich configurations were reviewed herein. Based on various shapes, hybrid PMTWSs can be classified into six categories: reinforced hybrid honeycomb (RHH), reinforced hybrid grid (RHG), reinforced hybrid corrugation (RHC), and reinforced hybrid truss (RHT), as well as combinational hybrid lattice (CHL), and uncommon hybrid lattice (UHL) structures. Furthermore, manufacturing techniques, experimental methods, simulation models, and analytical equations for the stiffness and strength of typical PMTWSs and relevant sandwich structures were discussed. Moreover, available experimental data were compared, and failure modes as well as strengthening mechanisms were analyzed. Different parameter analysis techniques of hybrid PMTWS were included along with methods, types, typical cases, and results. Finally, the paper concluded with the future research prospects on hybrid PMTWS in sandwich applications. This comprehensive review offers extensive literature information and presents new design ideas for engineers and researchers interested in thin-walled or sandwich structures.周期性多室薄壁结构（PMTWSs）广泛应用于航空航天、船舶和建筑行业。近年来，利用增强材料（RMs）增强具有PMTWS芯的混合夹层结构引起了相当大的研究关注。为此，本文综述了rm增强pmtws及其夹层结构的准静态力学性能（QSMP）的最新研究进展。根据结构形式的不同，可将混合pmtws结构分为增强混合蜂窝结构（RHH）、增强混合网格结构（RHG）、增强混合波纹结构（RHC）和增强混合桁架结构（RHT）、组合混合晶格结构（CHL）和非典型混合晶格结构（UHL） 6类。讨论了典型pmtws及其夹层结构的制造工艺、实验方法、仿真模型以及刚度和强度的解析方程。并对现有试验数据进行了对比，分析了其失效模式和强化机理。介绍了混合PMTWS的各种参数分析方法、类型、典型案例和结果。最后，对混合PMTWS在夹层中的应用前景进行了展望。这篇全面的综述提供了广泛的文献信息，并为对薄壁或夹层结构感兴趣的工程师和研究人员提供了新的设计思路。来源：复合材料力学仿真Composites FEM