International Journal of Computational Methods最新文献_第7页

A numerical method to study the fiber orientation and distribution of fiber reinforced self-compacting concrete 纤维自密实混凝土纤维取向与分布的数值研究方法

IF 1.7 4区工程技术

International Journal of Computational Methods Pub Date : 2023-01-12 DOI: 10.1142/s021987622241002x

Xuemei Liu, Xiangyu Xie, Lihai Zhang, N. Lam

引用次数: 0

NIPG finite element method for convection dominated diffusion problems with discontinuous data 不连续数据对流主导扩散问题的NIPG有限元方法

IF 1.7 4区工程技术

International Journal of Computational Methods Pub Date : 2023-01-12 DOI: 10.1142/s0219876223500019

R. Yadav, Pratima Rai, K. Sharma

引用次数: 0

A Six-Level Time-Split Leap-Frog/Crank-Nicolson Approach For Two-Dimensional Nonlinear Time-Dependent Convection Diffusion Reaction Equation 二维非线性时变对流扩散反应方程的六层时间分裂跳蛙/曲柄-尼科尔森方法

IF 1.7 4区工程技术

International Journal of Computational Methods Pub Date : 2023-01-12 DOI: 10.1142/s0219876222500645

E. Ngondiep

引用次数: 4

A Multi-Dimensional Lagrange Multiplier Method to Identify the Load Distribution on 3D Special-Shaped Surface in the Strength Analysis of Aircraft Structure 飞机结构强度分析中三维异形表面载荷分布识别的多维拉格朗日乘子法

IF 1.7 4区工程技术

International Journal of Computational Methods Pub Date : 2023-01-09 DOI: 10.1142/s0219876222500542

Tong Li, Zebei Mao, Yongming Cai, Bo Wang, Liang Chen

{"title":"A Multi-Dimensional Lagrange Multiplier Method to Identify the Load Distribution on 3D Special-Shaped Surface in the Strength Analysis of Aircraft Structure","authors":"Tong Li, Zebei Mao, Yongming Cai, Bo Wang, Liang Chen","doi":"10.1142/s0219876222500542","DOIUrl":"https://doi.org/10.1142/s0219876222500542","url":null,"abstract":"In the process of aircraft structural design, the aerodynamic load and inertial load need to be distributed from single loading points to distributed finite element (FE) nodes before strength analysis. The most commonly used loading distribution method is a Multi-Point Arrangement (MPA) method, which introduces a one-dimensional Lagrange multiplier based on the principle of minimum deformation energy, and simplifies the special-shaped 3D surface in aircraft structure to a plane. However, the actual aircraft structure contains a large number of special-shaped surfaces, and the MPA method cannot accurately distribute the loads on these complex special-shaped surfaces, affecting the accuracy of strength analysis. This paper developed a new 3D load distribution method based on multi-dimensional Lagrange multipliers (MDLM), which can simultaneously achieve an efficient and accurate distribution of surface aerodynamic loads and inertial loads in all directions. Typical numerical cases showed that when an aircraft structure model is a plane, this MDLM method converges to the traditional MPA method. For 3D special-shaped surfaces, the average error of this MDLM method is 0.77–2.28%, which is significantly smaller than the average error of the traditional MPA method (3.30–7.40%).","PeriodicalId":54968,"journal":{"name":"International Journal of Computational Methods","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42637306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Different Types of Constitutive Parameters Red Blood Cell Membrane Based on Machine Learning and FEM 基于机器学习和有限元的不同类型红细胞膜本构参数

IF 1.7 4区工程技术

International Journal of Computational Methods Pub Date : 2022-12-28 DOI: 10.1142/s0219876222500578

Xinyu Wei, Jianbing Sang, Chuan Tian, Lifang Sun, Baoyou Liu

{"title":"Different Types of Constitutive Parameters Red Blood Cell Membrane Based on Machine Learning and FEM","authors":"Xinyu Wei, Jianbing Sang, Chuan Tian, Lifang Sun, Baoyou Liu","doi":"10.1142/s0219876222500578","DOIUrl":"https://doi.org/10.1142/s0219876222500578","url":null,"abstract":"Research on mechanical response of single red blood cells (RBCs) to mechanical stimuli and the complex material properties of erythrocyte membranes is significant. This work proposes a novel procedure that combines nonlinear finite element method and two machine learning algorithms including Two-Way Deepnets and XGboost together with experiments to identify the hyper elastic material parameters of erythrocyte membranes. Finite element models were established to simulate the stretching process of erythrocyte optical tweezers with different constitutive material parameters from three constitutive models. And the results from the finite element analysis were carried out to generate the training sets for the neural networks. In order to validate the predictions in great detail, the finite element response curves based on the three groups of predicted constitutive parameters are compared with the experimental data. The comparison results show that the Two-Way Deepnets model has performed better efficiency and accuracy and that Reduced Polynomial can describe more precisely the hyperelastic properties of the erythrocyte membrane in the range of experimentally obtained characteristics of single RBCs. This research provides new insights into the identification of constitutive parameters of biological cell membranes, which is crucial for the future research on mechanical mechanisms of the biological cells.","PeriodicalId":54968,"journal":{"name":"International Journal of Computational Methods","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43855016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Radial Basis Function Based Differential Quadrature Approach to Study Reaction Diffusion of Ca2+ in T Lymphocyte 基于径向基函数的微分求积法研究Ca2+在T淋巴细胞中的反应扩散

IF 1.7 4区工程技术

International Journal of Computational Methods Pub Date : 2022-12-20 DOI: 10.1142/s0219876222500591

Hemant Bhardwaj, N. Adlakha

引用次数: 2

Well-balanced unstaggered central schemes based on the continuous approximation of the bottom topography 基于底部地形连续逼近的平衡不交错的中心方案

IF 1.7 4区工程技术

International Journal of Computational Methods Pub Date : 2022-12-14 DOI: 10.1142/s021987622250058x

Jian Dong

引用次数: 0

An improved evolutionary structure optimization method for smooth topology design of structures 一种用于结构光滑拓扑设计的改进进化结构优化方法

IF 1.7 4区工程技术

International Journal of Computational Methods Pub Date : 2022-12-14 DOI: 10.1142/s021987622250061x

Leijia Wang, Wenhui Yue, M. Zhu

引用次数: 0

The dielectric boundary force in molecular solvation of the generalized poisson-boltzmann equation with ionic sizes 离子尺寸广义poisson boltzmann方程分子溶剂化过程中的介电边界力

IF 1.7 4区工程技术

International Journal of Computational Methods Pub Date : 2022-12-14 DOI: 10.1142/s0219876222500608

Qing-Qing Zhang, Zhengfang Zhang, M. He, Xinping Shao, Weifeng Chen

引用次数: 0

Periodic Behaviors of a Linear Fourth-order Difference Solution to the Benjamin-Bona-Mahony-type Equation with Time-periodic Boundaries 具有时间周期边界的benjamin - bona - mahony型方程线性四阶差分解的周期行为

IF 1.7 4区工程技术

International Journal of Computational Methods Pub Date : 2022-12-14 DOI: 10.1142/s0219876222500621

Xiaofeng Wang, Hong Cheng

引用次数: 0