Results 31 to 40 of about 1,609 (163)

Special Approach for Thermal Modelling Fibre-Reinforced Composites with Larger Aspect Ratio

Communications, 2012
Fundamental solutions and their derivatives located along fibre axes are presented to simulate the interactions of matrix and reinforcing elements in composite materials, when the primary field is a scalar function temperature in heat conduction.
Milan Zmindak, Pavol Novak
doaj   +1 more source

Biomechanical Analysis and Injury Prediction in Pilots With Lumbar Spondylolysis Under Different Seat Inclination Angles

JOR SPINE, Volume 9, Issue 1, March 2026.
The biomechanical responses of three lumbar models under both seat angles remain below injury thresholds. However, the occurrence of spondylolysis at a 22° angle poses a higher risk. ABSTRACT Background This study aims to quantify the biomechanical effects of different seat inclinations on the normal and spondylolysis lumbar of pilots under typical ...
Mengmeng Jin, Yingwei Li, Jiatao Wang, Qianxiang Zhou, Zhongqi Liu, Pan Guo   +5 more
wiley   +1 more source

Effect of the Strut Thickness on the Mechanical Properties, Deformation, and Failure Mechanisms of Vascular Bundle–Inspired Structures

Engineering Reports, Volume 8, Issue 2, February 2026.
The vascular bundle–inspired structure design involved developing a unit cell and rotating it by 45° for 2D/3D assembly. Unit cells varied in strut thickness (t) from 0.2 to 1.15 mm. Finite element model (FEM) analysis under quasi‐static compression yielded stress–strain curves and stress/strain maps.
Fredrick Mwema, Ndivhuwo Ndou
wiley   +1 more source

A High-Precision Planar NURBS Interpolation System Based on Segmentation Method for Industrial Robot

Applied Sciences, 2023
NURBS curve parameter interpolation is extensively employed in precision trajectory tasks for industrial robots due to its smoother performance compared to traditional linear or circular interpolation methods.
Xun Liu, Yan Xu, Jiabin Cao, Jinyu Liu, Yanzheng Zhao   +4 more
doaj   +1 more source

Rotary 4D Printing of Programmable Metamaterials on Sustainable 4D Mandrel

Advanced Materials Technologies, Volume 11, Issue 1, 8 January 2026.
The paper introduces open, rotary 4D printing of programmable tubular metamaterials. It presents an open, non‐planar path‐to‐G‐code pipeline and shape‐changing rotary mandrel that enable support‐free fabrication and multi‐stimuli actuation. Experiments and FEA validate the mentioned features and stress redistribution.
Hesam Soleimanzadeh, Mahdi Bodaghi, Marzieh Jamalabadi, Bernard Rolfe, Ali Zolfagharian   +4 more
wiley   +1 more source

Optimization of Third Rail End Elbow Based on NURBS

Chengshi guidao jiaotong yanjiu
[Objective] In order to improve the collision performance of the end elbow of the shoe-rail system and enhance the current collection quality, it is necessary to carry out the optimization research on the third-rail end elbow based on NURBS (Non-Uniform ...
RUAN Jie, ZHONG Zhuolin, WANG Bingqin, LI Hongmei, XU Hongyan, YAN Xiaohui   +5 more
doaj   +1 more source

The Future of NURBS in CAD: Trends and Innovations [PDF]

MATEC Web of Conferences
Non-Uniform Rational B-Splines (NURBS) remain central to CAD. Their key strength lies in precision, especially for modeling intricate curves and surfaces. Engineers continue to rely on them. Yet technology advances.
Outaybi Hajar, El Khalfi Ahmed, El Makaoui Jawad   +2 more
doaj   +1 more source

Interactive rendering of NURBS surfaces [PDF]

Computer-Aided Design, 2014
[Resumo] As superficies NURBS (Non-uniform rational B-splines) son unhas das primitivas más empregadas no modelado de alta calidade nas ferramentas CAD/CAM e o software gráfico. Dado que a avaliación directa de superficies NURBS na GPU é unha tarefa altamente complexa, a aproximación máis común para o render de NURBS é a súa conversión previa na CPU en
Raquel Concheiro, Margarita Amor, Emilio J. Padrón, Michael Doggett   +3 more
openaire   +2 more sources

Higher‐Order, Mixed‐Hybrid Finite Elements for Kirchhoff–Love Shells

International Journal for Numerical Methods in Engineering, Volume 126, Issue 21, 15 November 2025.
ABSTRACT A novel mixed‐hybrid method for Kirchhoff–Love shells is proposed that enables the use of classical, possibly higher‐order Lagrange elements in numerical analyses. In contrast to purely displacement‐based formulations that require higher continuity of shape functions as in isogeometric analysis (IGA), the mixed formulation features ...
Jonas Neumeyer, Michael Wolfgang Kaiser, Thomas‐Peter Fries   +2 more
wiley   +1 more source

NURBS‐enhanced finite element method (NEFEM) [PDF]

International Journal for Numerical Methods in Engineering, 2008
AbstractAn improvement to the classical finite element (FE) method is proposed. It is able to exactly represent the geometry by means of the usual CAD description of the boundary with non‐uniform rational B‐splines (NURBS). Here, the 2D case is presented.
Sevilla Cárdenas, Rubén, Fernández Méndez, Sonia, Huerta, Antonio   +2 more
openaire   +10 more sources