About measuring the stress intensity factor of cracks in curved, brittle shells by Siwen Cao, Andr�s A. Sipos

“…., shapes with non-vanishing Gaussian curvature. This paper introduces a novel approach to obtaining material properties related to fracture by experimentally observing weakly curved surfaces. …”
Get full text

Friction Characteristics of Post-Tensioned Tendons of Full-Scale Structures Based on Site Tests by Haoyun Yuan, Yuan Li, Bin Zhou, Shuanhai He, Peizhi Wang

“…In the design of prestressing concrete structures, the friction characteristics between strands and channels have an important influence on the distribution of prestressing force, which can be considered comprehensively by curvature and swing friction coefficients. However, the proposed friction coefficient varies widely and may lead to an inaccurate prestress estimation. …”
Get full text

Measuring Strain Response Mode Shapes with a Continuous-Scan LDV by Anthony B. Stanbridge, Milena Martarelli, David J. Ewins

“…Second spatial derivatives of the deflection equations are therefore easily derived, and these should, in principle, give curvature equations from which, for a beam or plate of known cross-section, stresses and strains can be obtained directly. …”
Get full text

Position Optimization of Passive Patch Based on Mode Contribution Factor for Vibration Attenuation of Asymmetric 1D Structure by Dongwoo Hong, Kyeongnak Lee, Byeongil Kim

“…Using this contribution as a weight, the optimal position of the passive patch is determined as the maximum value obtained in the form of a linear combination multiplied by the curvature of the beam. Simulation and experiment were used to test the efficacy of the location determined for passive patches. …”
Get full text

Partitioned Quasi-Newton Approximation for Direct Collocation Methods and Its Application to the Fuel-Optimal Control of a Diesel Engine by Jonas Asprion, Oscar Chinellato, Lino Guzzella

“…This approach resolves memory limitations, preserves the correct sparsity pattern, and generates more accurate curvature information. The effectiveness of this improvement when applied to engineering problems is demonstrated. …”
Get full text

Gear Cutting Machining of Klingelnberg Cyclo-palloid Bevel Gear based on Monolithic Cutter Disc by Wang Zhiyong, Yang Weiyin, Zhang Yu, Zhai Huaming

“…According to the structure parameters of two-part cutters,the method for designing cutter-head and cutter blade of monolithic cutter disc is proposed.According to the curvature relationship between the meshed tooth flanks,a method for determining the amount of modification of cutter radius is established by iteration algorithm. …”
Get full text

Design of Reverse Curves Adapted to the Satellite Measurements by Wladyslaw Koc

“…Thus, the only solution would be the application of two circular arcs of opposite curvature signs, that is, the use of an inverse curve. …”
Get full text

Asymmetric-bifurcation snapping, all-or-none motion of Venus flytrap by Xiangli Zeng, Yingzhe Wang, Keisuke Morishima

“…To understand the mechanism underlying this asymmetrically reversible motion, a three-dimensional laser profiler was used to measure both static morphological information and dynamic movements (500 frames per second) of the Venus flytrap, including its rapid closure and slow re-opening. The mean-curvature differences between the open and closed lobes were recorded and used for morphology and energy evaluations. …”
Get full text

<i>CR</i>-Selfdual Cubic Curves by Mircea Crasmareanu, Cristina-Liliana Pripoae, Gabriel-Teodor Pripoae

“…In addition, we study (from the differential geometric viewpoint) the surface parameterized by all real cubic curves and we derive its curvature functions. As a by-product, we find a new classification of real Möbius transformations and some estimates for the number of vertices of real cubic curves.…”
Get full text

Damage Identification of Structures Based on Smooth Orthogonal Decomposition and Improved Beetle Antennae Search Algorithm by Zhixiang Hu, Peiguan Zhang

“…Firstly, the damage index which can track the curvature changing of mode shape identified by the SOD method is generated by an adaptive polynomial fit method. …”
Get full text

Noncommutative Relativistic Spacetimes and Worldlines from 2 + 1 Quantum (Anti-)de Sitter Groups by Ángel Ballesteros, N. Rossano Bruno, Francisco J. Herranz

“…The κ-deformation of the (2 + 1)D anti-de Sitter, Poincaré, and de Sitter groups is presented through a unified approach in which the curvature of the spacetime (or the cosmological constant) is considered as an explicit parameter. …”
Get full text

Shock Mechanism Analysis and Simulation of High-Power Hydraulic Shock Wave Simulator by Xiaoqiu Xu, Han Tao, Junwei Han

“…Further, the similarity evaluation of shock wave simulation was achieved based on the curvature distance, and the results stated that the simulation method was reasonable and the structural optimization based on software simulation is also beneficial to the increase of efficiency. …”
Get full text

Load Carrying and Hydrostatic Performances of Innovative Encapsulated Anchorage System for Unbonded Single Strand by Min Sook Kim, Young Hak Lee

“…A new anchorage system is proposed having a circular bearing plate and curvature between the bearing plate and the anchor head to improve stress concentration. …”
Get full text

The Tolman VII space-time in the presence of charge and a cosmological constant by James Ripple, Anish Agashe

“…We analyse the spatial geometry of the solution and present conditions for zero and non-zero spatial curvature. We show that for a particular value of the boundary, the Tolman VII space-time can be matched to the charged Nariai space-time. …”
Get full text

Research on Design Method of Cathode Profile for High Precision Electrolytic Machining of Spur Face Gear by Wei Jiang, Yan Cao, Feng Jia, Liang Huang

“…Secondly, by analyzing the curvature radius of each tooth surface sampling point, the design scheme of the corresponding cathode tool profile is constructed based on the theory of electrolytic machining equilibrium gap theory. …”
Get full text

A Forming Method and Theoretical Verification of Curvilinear Cylindrical Gears for Adjustable Contact Area by Xuegang Zhang, Yongchun Xie, Pengfei Wang

“…The research results show that the proposed forming method is feasible. Adjusting the curvature radius of the cutter can form gear pairs with any length of contact area. …”
Get full text

Damage Identification by the Data Expansion and Substructuring Methods by Eun-Taik Lee, Hee-Chang Eun

“…The responses are transformed into curvature, strain, and stress, among others, which characterize the mechanical behavior of the structural members, and can be utilized as damage indices for damage detection. …”
Get full text

Suppression of Brazier Effect in Multilayered Cylinders by Hiroyuki Shima, Motohiro Sato, Sung-Jin Park

“…Numerical computations have been performed to measure the degree of suppression in a quantitative manner and to explore how it is affected by the variations in the bending curvature, the number of stacked cylinders, and the interlayer coupling strength.…”
Get full text

Behaviour of Textile-Reinforced Concrete Beams versus Steel-Reinforced Concrete Beams by Fahed Alrshoudi

“…The results of tensile stress-strain, load-deflection, moment-curvature, and tension stiffening behaviours of TRC beams were associated with conventional steel-reinforced concrete (SRC) beams. …”
Get full text

Evaluation of Cyclic Fatigue Resistance of Novel Replica-Like Instruments in Static Test Model by Uğur Aydın, Melih Özdemir, Emre Çulha, Muazzez Naz Baştürk Özer, Bilal Turan

“…Stainless steel canals with a 60° angle and a 3-mm curvature radius were specially prepared. The canals were shaped with each rotary file system and tested for resistance using a cyclic fatigue testing apparatus. …”
Get full text