Asymptotic integration of elasto-plastic constitutive relation for isotropic hardening material and its computational precision

In this paper, an asymptotic expansion solution of the constitutive equation of hardening materials is presented. Its 1st asymptotic integration can give an approximate one with good enough accuracy and the second asymptotic one improves the precision of solutions further. The steps of its algorithms are fairly simple and clear, and its computational workload is considerably reduced. It can be easily incorporated into a general purpose finite element program.The Chinese original of this article was published in the Chinese edition ofActa Mechanica Solida Sinica, No. 1, 1986.     

Molecular simulation-guided and physics-informed mechanistic modeling of multifunctional polymers

Acta Mechanica Sinica - Polymeric materials have a broad range of mechanical and physical properties. They have been widely used in material science, biomedical engineering, chemical engineering,...     

Artificial intelligence in fluid mechanics

Acta Mechanica Sinica - Recent progress in machine learning and big data not only forms a new research paradigm, but also provides opportunity to solve grand challenges in fluid mechanics....     

毕生献中华──纪念林同骥先生诞辰80周年

林同骥先生是我国著名流体力学家．在稀薄气体力学、高超声速、跨声速空气动力学和不可压缩流体动力学等广泛的领域中都有重要的研究成果,尤其是在再入飞行器防热、再人物体的表面烧蚀和不可压缩振荡流等方面,为我国航天事业和海洋工程的发展作出了贡献．林同骥先生在１９７９～１９９０年期间先后任《力学学报》副主编、主编．为《力学学报》在改革开放新形势下的发展和进人国际交流大网络倾注了大量心血．在纪念林同骥先生诞辰８０周年之际,我们向读者介绍这位毕生献中华的科学家,并刊出他的学生们的一些论文,以表达怀念与崇敬之情．     

Bond-associated non-ordinary state-based peridynamic model for multiple spalling simulation of concrete

Acta Mechanica Sinica - The non-ordinary state-based peridynamic (NOSB PD) model has the capability of incorporating existing constitutive relationships in the classical continuum mechanics. In the...     

非均匀材料力学: 学术思想及研究趋势

针对非均匀材料力学当前的8个前沿性课题,以各国科学家在第一届国际非均匀材料力学会议(ICHMM)相关专题讨论会上的发言及总结为红线,介绍了当前国际上在材料/固体力学交叉领域内的一些新的学术思想及研究方向.对多尺度模拟, 新的计算方法,纳米力学,微结构概率力学,广义连续介质力学理论,材料设计,多孔材料和材料就位特性的试验技术等的综合性叙述,阐明了非均匀材料力学的一些新的生长点及其发展方法与前景.      

Studies on theory and modeling of droplet and spray combustion in China: a review

Acta Mechanica Sinica - Combustion phenomena were discovered still in far ancient time of China. From the 50’s of the last century, owing to the fast development of energy and power,...     

Concurrent topology optimization design of stiffener layout and cross-section for thin-walled structures

Acta Mechanica Sinica - Stiffened plates or shells are widely used in engineering structures as primary or secondary load-bearing components. How to design the layout and sizes of the stiffeners is...     

Mechanics of molecular beacons for mRNA detecting

Acta Mechanica Sinica - Decoding genetic information is crucial for gene therapy and cancer diagnosis, which has attracted growing interest in the field of clinical medicine and life science. In...     

Limb-inspired bionic quasi-zero stiffness vibration isolator

Acta Mechanica Sinica - Vibration reduction has always been one of hot and important topics in mechanical engineering, especially for the special measurement instrument. In this paper, a novel...     

Studies on the sound absorption and transmission loss performances of wood-based,natural and waste materials

Acta Mechanica Sinica - The sound absorption and sound transmission loss performances of the natural woods, hard and soft processed woods with attachment of the various natural or waste materials...     

Active feedback control of sound radiation in elastic wave metamaterials immersed in water with fluid–solid coupling

Acta Mechanica Sinica - Due to their potential properties unlike traditional materials and structures, elastic wave metamaterials have received significant interests in recent years. With the...     

A numerical study of shock-interface interaction and prediction of the mixing zone growth in inhomogeneous medium

Acta Mechanica Sinica - The research focuses on the active control scheme of a fully-developed turbulent boundary layer (TBL) forced by the submerged synthetic jet, and the particle image...     

Gauss optimization method for the dynamics of unilateral contact of rigid multibody systems

Acta Mechanica Sinica - The discontinuous dynamical problem of multi-point contact and collision in multi-body system has always been a hot and difficult issue in this field. Based on the...     

Effect of surface roughness on the aerodynamics of a high-speed train subjected to crosswinds

Acta Mechanica Sinica - The irregularities on trains bodies are normally ignored or greatly simplified in studies concerned with aerodynamics. However, surface roughness is known to affect the flow...     

郭永怀光辉的一生

郭永怀先生是我国著名的力学家和应用数学家．在美国留学和工作期间,他耕耘在空气动力学前沿,为跨声速流与应用数学做出贡献．在回国工作的12年间,他积极参加规划我国力学发展蓝图,培育力学人才,是我国近代力学的奠基人;他为我国原子弹、氢弹的研制贡献了全部心血乃至生命,是我国核武器事业的先驱．郭永怀先生热爱祖国、艰苦奋斗、谦虚质朴、无私奉献,他学识渊博,治学严谨,是我国科技工作者的楷模．郭永怀先生是《力学学报》第二任主编．在他的主持下,《力学学报》从创刊初期就具有很高的学术起点和公正、严谨、求实的学术声誉．这里我们向广大读者介绍郭先生的光辉一生,并刊出他的学生们的一些论文,以表达我们对这位主编的怀念和崇敬．     

Quantitative characterization of damage-aggravation effect caused by progressive damage

Acta Mechanica Sinica - Aiming at the progressive damage phenomenon in geotechnical field, it attempts to study the effect of progressive damage on the macro-bearing capacity. Firstly, based on the...     

Intra- and inter-specific scaling laws of plants and animals

Acta Mechanica Sinica - The allometric scaling laws of metabolism in 447 animal and 1200 plant species showed convex and concave curvatures between mass and metabolic rate, respectively. The...     

Effects of electrical stimulation on skin surface

Acta Mechanica Sinica - Skin is the largest organ in the body, and directly contact with the external environment. Articles on the role of micro-current and skin have emerged in recent years. The...     

Improved Carroll's hyperelastic model considering compressibility and its finite element implementation

Acta Mechanica Sinica - In engineering component design, material models are increasingly used in finite element simulations for an expeditious and less costly analysis of the design prototypes. As...