Results 21 to 30 of about 1,676,547 (251)

Sensitivity Analysis for Optimal Design of Multibody Systems with Clearance Joint [PDF]

International Journal of Advanced Design and Manufacturing Technology, 2018
This paper deals with the sensitivity analysis and optimization of system parameters for a classical slider-crank mechanism as a multibody system which includes a clearance between the joints of coupler and slider. Due to the nonlinearity involved in the
Saeed Ebrahimi, Esmaeil Salahshoor, Saeed Nouri   +2 more
doaj  

Wear prediction for dry revolute joint with clearance in multibody system by integrating dynamics model and wear model

Latin American Journal of Solids and Structures
This work presents an investigation on wear prediction of multibody system including dry revolute clearance joint using a computational methodology. A procedure to analyze multibody system in which wear is present at revolute joints is presented.
Z.F. Bai, H.B. Zhang, Y. Sun
doaj   +1 more source

Research on Influence of Joint Clearance on Precision of 3-TPT Parallel Robot [PDF]

Mechanical Sciences, 2019
The error model of the working accuracy of parallel mechanism was established in this paper. The D-H matrix method and error independent method were used to analyze the clearance error of mechanism joint based on the inverse position kinematics solution.
C. Zhu, Z. Zhao
doaj   +1 more source

Motion Accuracy and Dynamic Responses of Dual-Manipulator on Spacecraft Considering Clearance Joints

Aerospace
Clearance in joints caused by assemblage, manufacturing errors, and wear is inevitable, which will affect the dynamic performance of the dual-manipulator system on spacecraft.
Yiling Kuang, Zhengfeng Bai, Cheng Wei
doaj   +1 more source

Research on High Precision Stiffness Modeling Method of Redundant Over-Constrained Parallel Mechanism

Sensors, 2023
Traditional stiffness modeling methods do not consider all factors comprehensively, and the modeling methods are not unified, lacking a global stiffness model.
Sen Wang, Haoran Li, Xueyan Han, Jiahao Wei, Tao Zhang, Shihua Li   +5 more
doaj   +1 more source

Non-Uniform Clearance between Rotor Surfaces and Its Effect on Machine Performance in Twin-Screw Compressors [PDF]

, 2012
The performance of twin-screw compressors is primarily affected by the clearance between a pair of meshing rotors. This study proposes a method for calculating the normal clearance along the contact line between rotors using two normal rack curves, which
Wu, Yu-Ren, Hsieh, Ho-Chun, Hsiao, Hsiang-Hui   +2 more
core   +1 more source

An Adaptive Dissipation–Precision Coordinated Multi-Scale Implicit Integration Algorithm for Thermo-Mechanical Coupled Dynamics of Flexible Multibody Systems with Temperature-Dependent Clearance Joints

Applied Sciences
Extreme orbital thermal cycling and temperature-dependent clearance nonlinearity make it difficult to predict contact–impact, stick–slip, and bifurcation responses of flexible deployable space structures with sufficient stability, accuracy, and ...
Yuntao Hua, Ning Zhang, Changzheng Qian, Shengxin Sun, Hutao Cui, Wenlai Ma   +5 more
doaj   +1 more source

Creatinine clearance versus serum creatinine as a risk factor in cardiac surgery [PDF]

, 2003
Walter JA, Mortasawi A, Arnrich B, et al. Creatinine clearance versus serum creatinine as a risk factor in cardiac surgery. BMC Surgery. 2003;3(1): 4.BACKGROUND: Renal impairment is one of the predictors of mortality in cardiac surgery.
Mortasawi, Amir, Inez Frerichs, Albert, Alexander, Mortasawi Amir, Rosendahl Ulrich, Frerichs, Inez, Alexander Albert, Ulrich Rosendahl, Jürgen Ennker, Amir Mortasawi, Walter, Jörg, Arnrich, Bert, Rosendahl, Ulrich, Frerichs Inez, Albert Alexander, Arnrich Bert, Ennker Jürgen, Jörg Walter, Bert Arnrich, Walter, Jörg A., Walter Jörg, Ennker, Jürgen   +21 more
core   +2 more sources

Language, Culture, and Cancer: Qualitative Insights Into Communication Disparities Among Spanish‐Speaking Caregivers of Children With Cancer

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Latino children are projected to make up nearly one‐third of United States (US) children by 2060, and many of their caregivers speak Spanish. Prior survey research has documented communication difficulties for Spanish‐speaking caregivers of children with cancer, but contemporary qualitative data are limited.
Jenny Ruiz, Alejandra Curbelo‐Paz, Sonia Morales, Elizabeth Contreras, Amy Houtrow, Scott H. Maurer, Judy C. Chang   +6 more
wiley   +1 more source

The value of statistical life and cost–benefit evaluations of landmine clearance in Cambodia [PDF]

, 2010
Development agencies spend approximately US$ 400 million per year on landmine clearance. Yet many cost–benefit evaluations suggest that landmine clearance is socially wasteful because costs appear to far outweigh social benefits.
Helmers, Kent, Cameron, Michael Patrick, Tressler, John, Lim, Steven, Vaddanak, Kien, Gibson, John   +5 more
core   +1 more source