Optimal Design of the Path of Chain Link Systems

1993 ◽  
Vol 115 (4) ◽  
pp. 793-799 ◽  
Author(s):  
J.-P. Peng ◽  
M. Carpino
Keyword(s):  
Optimal Design ◽  
Dynamic Model ◽  
Constant Velocity ◽  
Small Amplitude ◽  
Optimal Path ◽  
Dynamic Effects ◽  
Chain System ◽  
Chain Link ◽  
Direct Perturbation ◽  
General Method

A general method for the design of the optimal path for a constant velocity chain system is presented. Both the dynamic effects and the kinematic effects of finite sized links have been incorporated into a dynamic model for arbitrary chain paths. A direct perturbation solution is developed for small amplitude oscillations. This model is then used to optimize chain paths for minimum position error and speed variation. An example of an optimized chain path for an oval configuration operating at low speed is presented.

Optimal Design of the Path of Chain Link Systems

1990 ◽  
Author(s):  
J.-P. Peng ◽  
M. Carpino
Keyword(s):  
Optimal Design ◽  
Dynamic Analysis ◽  
Dynamic Model ◽  
High Speed ◽  
Position Error ◽  
Dynamic Effects ◽  
Low Speed ◽  
Chain Link ◽  
A Chain ◽  
General Method

Abstract A general method for the design of the optimal chain path for a chain link system is presented. The dynamics of a chain link system are affected by both the kinematic effects of finite sized links and dynamic effects. Both of these effects have been incorporated into a dynamic model for arbitrary chain paths. This model is then used to determine chain paths which have been optimized for minimum position error and speed variation. Results of the dynamic analysis are presented for both low speed and high speed operations. An example of an optimized chain path for an oval configuration operating at low speed is also presented.

On the Theory of the Calculation of the Constant Velocity Ball Transmission Joints

1976 ◽  
Vol 98 (3) ◽  
pp. 852-857 ◽  
Author(s):  
N. Bellomo
Keyword(s):  
Working Conditions ◽  
Load Distribution ◽  
Constant Velocity ◽  
Numerical Calculations ◽  
Torque Capacity ◽  
Safe Working ◽  
General Method

In this work a general method for the calculation of constant velocity ball transmission joint with straight grooves is studied. Numerical calculations concerning the forces transmitted by each driving ball and the torque capacity have been realized with reference to known and manufactured types of joint. The study allows one to deduce some important and experimentally confirmed designing rules and gives a precise picture of the load distribution in the joint as well as the limits of safe working conditions.

Optimum Design of Elastically Supported Gyroscopes for Ship Stabilization

1984 ◽  
Vol 106 (4) ◽  
pp. 387-392
Author(s):  
K.-N. Lee ◽  
A. Seireg
Keyword(s):  
Optimal Design ◽  
Dynamic Model ◽  
Optimum Design ◽  
Design Procedures ◽  
System Parameters ◽  
Ship Roll ◽  
Elastically Supported ◽  
Elastic Spring

The study reported in this paper deals with the development of a dynamic model for the analysis of elastically supported gyroscopic absorber systems for ship stabilization. The gryoscopes are mounted on elastically supported platforms at the fore and aft ends of the ship to minimize both the roll and pitch movements. Springs and dampers are also utilized between the gyroscope gimbal and the platform. Several design configurations of the absorber are considered. Optimal design procedures are utilized to find the system parameters for best performance in each case. The performance of the resulting optimum absorber shows that introducing the elastic spring and damper between the gimbal and platform has a significant effect on reducing the ship-roll action.

Perfect Dynamic Model and Optimal Design of Vibration-Impact Rammer

2011 ◽  
Vol 422 ◽  
pp. 525-528
Author(s):  
Ke Chen ◽  
Zhi Shan Duan ◽  
Jia Qi Fei
Keyword(s):  
Optimal Design ◽  
Real Time ◽  
Dynamic Model ◽  
Computer Programming ◽  
New Method ◽  
Body System ◽  
The Real ◽  
Vibration Impact ◽  
Plastic Theory

In order to find a better method of optimal design of vibration-impact rammer, perfect the dynamic model of vibration-impact rammer. Based on the viscoelastic-plastic theory of soil body, the dynamic model and equation set of vibration-impact rammer and soil body system are built. After computer programming, the real-time working data of vibration-impact rammer is obtained and a new method for optimal design of vibration-impact rammer is provided.

Dynamic Analysis and Design of Compliant Mechanisms Using the Finite Element Method

2012 ◽  
Vol 163 ◽  
pp. 111-115 ◽  
Author(s):  
Wen Jing Wang ◽  
Li Ge Zhang ◽  
Shu Sheng Bi
Keyword(s):  
Finite Element Method ◽  
Dynamic Model ◽  
Natural Frequency ◽  
Compliant Mechanisms ◽  
Compliant Mechanism ◽  
The Finite Element Method ◽  
Dynamic Effects ◽  
Experiment System ◽  
Analysis And Design ◽  
Theoretical Results

Compliant mechanisms gain at least some of their mobility from the deflection of flexible members rather than from movable joints only. Dynamic effects are very important to improving the design of compliant mechanisms. An investigation on the dynamics and synthesis of the compliant mechanisms is presented. The dynamic model of compliant mechanisms is developed at first. The natural frequency and sensitivity are then studied based on the dynamic model. Finally, optimal design of compliant mechanism is investigated. The experimental study of natural frequency is performed. The comparison between the experiment results and the theoretical results verifies the validity of the experiment system and theoretical model.

Dynamic Modeling and Optimal Design of a 2R Compliant Mechanism

2017 ◽  
Author(s):  
Wenshuo Ma ◽  
Yan Xie ◽  
Jingjun Yu ◽  
Xu Pei
Keyword(s):  
Optimal Design ◽  
Dynamic Model ◽  
Dynamic Modeling ◽  
Dynamic Characteristics ◽  
Natural Frequencies ◽  
Compliant Mechanisms ◽  
Compliant Mechanism ◽  
Dynamic Performance ◽  
Dynamic Problems ◽  
Numerical Result

Dynamic performance is of great importance to compliant mechanisms which are employed in dynamic applications, especially if the dynamic problems in DOC (degree of constraint) directions are to be met. An investigation on the dynamic characteristics of a 2R compliant mechanism is presented. Based on the substructure techniques, the in-plane dynamic model of the preceding compliant mechanisms is developed. The natural frequencies and sensitivities are then analyzed. The numerical result verifies the validity of the proposed method. Finally, optimal design of compliant mechanism is investigated.

Development and Validation of a Physics-Based, Dynamic Model of a Gas Turbine

2013 ◽  
Author(s):  
Ashley P. Wiese ◽  
Matthew J. Blom ◽  
Michael J. Brear ◽  
Chris Manzie ◽  
Anthony Kitchener
Keyword(s):  
Steady State ◽  
Gas Turbine ◽  
Dynamic Model ◽  
Test Data ◽  
Thermal Inertia ◽  
Static Model ◽  
Dynamic Effects ◽  
Short Period ◽  
Development And Validation ◽  
State Error

This paper presents and validates a physics-based, dynamic model of a gas turbine. The model is an extension of that proposed by Badmus et al. [1], such that representation of a complete gas turbine is achieved. It includes new models of several gas turbine components, in particular the turbine and compressor, and also applies a well known method for prescribing boundary conditions [10] to the gas path. This model first uses data from a previously published, static model of the same gas turbine to determine this dynamic model’s many so-called ‘forcing terms’. A least-squares optimisation is then undertaken to estimate the shaft inertia and the thermal inertia of system components using transient test data. Importantly, these optimised results are all close to physically reasonable estimates. Further, they show that the shaft dynamics are only significant for a short period at the start of most transients, after which the dynamic effects of thermal storage are dominant. The complete gas turbine model is then validated against transient test data. Whilst the simulated traces demonstrate some steady-state error arising from the static model [12], the overall system dynamics appear to be captured well. Since steady-state error can be integrated out in a control system, this suggests that the proposed dynamic model is appropriate for use in a model-based, gas turbine controller.

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