The conversion of waves in a bent waveguide with a variable curvature

1990 ◽  
Vol 33 (6) ◽  
pp. 540-545 ◽  
Author(s):  
D. V. Vinogradov ◽  
G. G. Denisov
Keyword(s):  
Variable Curvature

scholarly journals Striated Tire Yaw Marks—Modeling and Validation

Energies ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4309
Author(s):  
Wojciech Wach ◽  
Jakub Zębala
Keyword(s):  
Vehicle Dynamics ◽  
Linear Equations ◽  
Tire Model ◽  
Vehicle Accidents ◽  
The Road ◽  
Variable Curvature ◽  
Macro Scale ◽  
On The Road ◽  
Multi Body ◽  
Non Linear Equations

Tire yaw marks deposited on the road surface carry a lot of information of paramount importance for the analysis of vehicle accidents. They can be used: (a) in a macro-scale for establishing the vehicle’s positions and orientation as well as an estimation of the vehicle’s speed at the start of yawing; (b) in a micro-scale for inferring among others things the braking or acceleration status of the wheels from the topology of the striations forming the mark. A mathematical model of how the striations will appear has been developed. The model is universal, i.e., it applies to a tire moving along any trajectory with variable curvature, and it takes into account the forces and torques which are calculated by solving a system of non-linear equations of vehicle dynamics. It was validated in the program developed by the author, in which the vehicle is represented by a 36 degree of freedom multi-body system with the TMeasy tire model. The mark-creating model shows good compliance with experimental data. It gives a deep view of the nature of striated yaw marks’ formation and can be applied in any program for the simulation of vehicle dynamics with any level of simplification.

Dynamics of cylindrical shells with variable curvature

1971 ◽  
Vol 19 (1) ◽  
pp. 39-48 ◽  
Author(s):  
T.J. McDaniel ◽  
J.D. Logan
Keyword(s):  
Cylindrical Shells ◽  
Variable Curvature

3D printing active variable curvature mirror research for zoom imaging

2021 ◽  
Author(s):  
Xiaopeng Xie ◽  
Liang Xu ◽  
Yongjie Wang ◽  
Le Shen ◽  
Mingyang Yang ◽  
...  
Keyword(s):  
3D Printing ◽  
Variable Curvature

Supercritical flow in bend with variable curvature radius

2018 ◽  
Vol 57 (5) ◽  
pp. 724-732 ◽  
Author(s):  
Zhong Tian ◽  
Can Ding ◽  
Wei Wang ◽  
Chun-Ni Zhang
Keyword(s):  
Curvature Radius ◽  
Supercritical Flow ◽  
Variable Curvature

EXPERIMENTS WITH A MIRROR OF VARIABLE CURVATURE

1938 ◽  
Vol 38 (9) ◽  
pp. 968-970
Author(s):  
W. V. Burg
Keyword(s):  
Variable Curvature

Pressurization Actuation Based Variable Curvature Mirror Having Variable Thickness

2017 ◽  
Vol 46 (10) ◽  
pp. 1011002
Author(s):  
赵惠 ZHAO Hui ◽  
解晓蓬 XIE Xiao-peng ◽  
许亮 XU Liang ◽  
丁蛟腾 DING Jiao-teng ◽  
刘美莹 LIU Mei-ying ◽  
...  
Keyword(s):  
Variable Thickness ◽  
Variable Curvature
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