Results 61 to 70 of about 14,416 (204)
Engineering Reports, Volume 8, Issue 3, March 2026.Classification of blood flow regimes: Spatial variation of endothelial shear stress (ESS) patterns across an atherosclerotic lesion. ABSTRACT Accurate geometrical representation of stenosis is essential for stent design, surgical planning, and computational fluid dynamics (CFD) simulations, as even minor shape variations significantly alter hemodynamic
Mohammad Javad Nazari +4 more
wiley +1 more source
Fitting and fairing quad-meshes by matrix weighted NURBS surfaces(矩阵权NURBS曲面的拟合与光顺)
Zhejiang Daxue xuebao. Lixue ban, 2023 介绍了利用矩阵权非均匀有理 B-spline（non-uniform rational B-spline，NURBS）曲面拟合与光顺带法向的网格数据。通过输入带法向的规则四边形网格，以网格的顶点为曲面的控制顶点，用法向信息计算每个控制顶点对应的矩阵权，构造矩阵权NURBS曲面。与传统NURBS曲面相比，矩阵权NURBS曲面具有拟柱面精度，当数据均匀采样自光滑曲面时，构造的矩阵权NURBS曲面具有较好的光顺性且能很好地拟合网格模型；当输入的网格数据掺杂噪声时 ...
董国鑫(DONG Guoxin) +1 more
doaj +1 more source
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 +5 more
wiley +1 more source
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
T-Spline Surface Toolpath Generation Using Watershed-Based Feature Recognition
Applied Sciences, 2020 The freeform surface is treated as a single machining region for most traditional toolpath generation algorithms. However, due to the complexity of a freeform surface, it is impossible to produce a high-quality surface using one unique machining process.
Yazui Liu, Gang Zhao, Pengfei Han
doaj +1 more source
Parametric Generation of Small Ship Hulls with CAD Software
Journal of Marine Science and Engineering, 2023 CAD software is a daily tool in ship design offices and shipyards, and every software uses NURBS or B-splines curves and surfaces as common foundations.
Francisco Pérez-Arribas
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 +4 more
wiley +1 more source
IGS: an IsoGeometric approach for Smoothing on surfaces
, 2016 We propose an Isogeometric approach for smoothing on surfaces, namely estimating a function starting from noisy and discrete measurements. More precisely, we aim at estimating functions lying on a surface represented by NURBS, which are geometrical ...
Dedè, Luca +3 more
core +1 more source
Advances in Civil Engineering, Volume 2026, Issue 1, 2026.This study confronts core challenges in concrete additive manufacturing (AM) for architectural applications. It specifically addresses the design–fabrication disconnection and absence of regulatory frameworks by proposing a multidisciplinary framework integrating parametric design, structural optimization, and robotic construction.
Songlin Bai +5 more
wiley +1 more source
Aerodynamic Characteristics Optimization Design of the HALE Joined‐Wing Configuration UAV
International Journal of Aerospace Engineering, Volume 2026, Issue 1, 2026.This study investigates the factors influencing the aerodynamic performance enhancement of the rear wing of the joined‐wing configuration UAVs by analyzing the flow field structure and flow mechanisms before and after airfoil optimization. Correspondingly, an optimization design concept tailored to joined‐wing aircraft is proposed. Focusing on the rear
Junlei Sun +4 more
wiley +1 more source