Go to the main menu
Skip to content
Go to bottom
REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Transactions of the KSME C: Industrial Technology and Innovation
Journal Basic Information
Journal DOI :
The Korean Society of Mechanical Engineers
Editor in Chief :
Volume & Issues
Volume 3, Issue 4 - Dec 2015
Volume 3, Issue 3 - Sep 2015
Volume 3, Issue 2 - Jun 2015
Volume 3, Issue 1 - Mar 2015
Selecting the target year
Flexible Body Dynamics Analysis of Agricultural Tractor Using 4-Post Road Simulator
Park, Ji Soo ; Lee, Kang Wook ; Cho, Chong Youn ; Yoon, Ji Won ; Shin, Jai Yoon ;
Transactions of the KSME C: Industrial Technology and Innovation, volume 3, issue 2, 2015, Pages 83~88
DOI : 10.3795/KSME-C.2015.3.2.083
Agricultural tractors are utilized on rough road such as rice paddy field. Therefore, static and dynamic load should be considered when simulating structural analysis with finite element analysis (FEA). But it consumes a lot of time and effort to measure dynamic load because of difficulty and complexity in modeling various field working load conditions and kinematics of machinery. In this paper, to reduce the efforts, 4-post road simulator is developed for agricultural tractor like modeling commercial vehicle. In proving ground test in our facility, I measured acceleration of front/rare axle and strain of body frame to validate input loads. The acceleration is used for defining input loads. And strain is validated with dynamics analysis including mode superposition method. As a result, I was able to calculate 4-post input road profiles, which represent similar proving ground profile with good reliability.
Dynamic Analysis of Timing Silent Chain System for a V-type Engine of a Vehicle
Feng, Zengming ; Tang, Lechao ; Li, Jun ; Jia, Yanhui ;
Transactions of the KSME C: Industrial Technology and Innovation, volume 3, issue 2, 2015, Pages 89~96
DOI : 10.3795/KSME-C.2015.3.2.089
Based on multi-body dynamic software RecurDyn, this paper proposes a modified form of timing silent chain system combing with the existing problem that vibration and chain tension is too large, which is applied for complicated conditions in a V-type engine, such as high speed, variable loads. The analysis of chain drive meshing characteristics is completed. Using the multi-body dynamic soft-ware RecurDyn, the dynamics characteristics of the improved system is studied, including chain tension, transmission error, chain fluctuations, equivalent spring force in different operating conditions. The study results show that chain tension, transmission error, chain fluctuation and equivalent spring force are within the scope of permission, all of them can meet the design requirement. There-fore, the design of this system is reasonable and practicable. The research results will provide a basis for assessing timing silent chain system in a V-type engine and a theoretical reference for designing and optimizing the timing silent chain system.
Need for Accurate Initial Conditions to Simulate Flexible Structures in Motion
Woo, Nelson ; Ross, Brant ; West, Ryan ;
Transactions of the KSME C: Industrial Technology and Innovation, volume 3, issue 2, 2015, Pages 97~106
DOI : 10.3795/KSME-C.2015.3.2.097
Flexible structures are often important components of mechanical assemblies in motion. A flexible structure sometimes must go through assembly steps that cause it to be in a pre-stressed condition when in the starting position for operation. A virtual prototype of the assembly must also bring the model of the flexible structure into the same pre-stressed condition in order to obtain accurate simulation results. This case study is presented regarding the simulation of a constant velocity joint, with a focus on the flexible boot. The case study demonstrates that careful definition of the initial conditions of the boot and flexible body contacts yields high-fidelity simulation results.
Analysis Method for Multi-Flexible-Body Dynamics Solver in RecurDyn
Choi, Juhwan ; Choi, Jin Hwan ;
Transactions of the KSME C: Industrial Technology and Innovation, volume 3, issue 2, 2015, Pages 107~115
DOI : 10.3795/KSME-C.2015.3.2.107
The analysis of multi-flexible-body dynamics (MFBD) has been an important issue in the area of the computational dynamics. This technique has been developed and improved in RecurDyn solver. This paper reviews the formulation which is applied in the RecurDyn solver. Basically, in order to solve the multi-flexible-body dynamics problem, an incremental finite element formulation using a corotational procedure is used. In particular, in order to solve the rigid and flexible bodies together, a constraint equation between a rigid body and a flexible body is applied, in which a virtual body and a flexible body joint are introduced.
Vibration Analysis of Compressor and Pipe Using RecurDyn
Kwon, Seungmin ; Son, Youngboo ; Ha, Jonghun ; Yoo, Hong Hee ;
Transactions of the KSME C: Industrial Technology and Innovation, volume 3, issue 2, 2015, Pages 117~124
DOI : 10.3795/KSME-C.2015.3.2.117
Recently, noise reduction in room air conditioner has been one of the most important issues as well as cooling efficiency. A rotary compressor is widely used in room air conditioners. But, the rotary compressor is the dominant vibration/noise source in an air conditioner. A number of studies have been conducted on reducing rotary compressor vibration/noise through improving muffler and resonator design. However, a noise delivering path between compressor and pipe is not fully taken into consideration. In this paper, the vibration analysis model of rotary compressor is modeled using RecurDyn and experimental validation is presented.
Simulation Analysis on Flexible Multibody Dynamics of Drum Brake System of a Vehicle
Liu, Yi ; Hu, Wen-Zhuan ;
Transactions of the KSME C: Industrial Technology and Innovation, volume 3, issue 2, 2015, Pages 125~130
DOI : 10.3795/KSME-C.2015.3.2.125
Using flexible multibody system dynamic method, the rigid-flexible coupling multibody dynamic analysis model of the drum brake system was developed, and the kinematic and dynamic simulation of the system was processed as its object of study. Simulations show that the friction will increase with the dynamic friction coefficient, but high dynamic friction coefficient will cause the abnormal vibration and worsen the stability of the brake system, even the stability of the whole automobile. The modeling of flexible multi-body can effectively analyze and solve complex three-dimensional dynamic subjects of brake system and evaluate brake capability. Further research and study on this basis will result in a convenient and effective solution that can be much helpful to study, design and development of the brake system.
Comfort Analysis of Mono-ski with Hydraulic Absorber
Cho, Hyeon-Seok ; Park, Jin-Kook ; Kim, Gyoo-Seok ; Mun, Mu-Sung ; Kim, Chang-Boo ;
Transactions of the KSME C: Industrial Technology and Innovation, volume 3, issue 2, 2015, Pages 131~140
DOI : 10.3795/KSME-C.2015.3.2.131
The mono-ski for the paraplegia designed to skiing is formed as seat bucket on the sled. The impact force transferred by snow surface during skiing is absorbed by the leg joints of normal human, but it is transferred to the human body on the seat when using mono-ski. Most of commercially available mono-ski have absorbing device and link mechanism between seat and ski mount in order to complement it. In this study we developed the comfort evaluation model that could provide skiing simulation of mono-ski with hydraulic damper and analyzed vibrational acceleration occurred during skiing uneven surface. The evaluation method used in this study is the international standard BS6841. We evaluated comfort performance of mono-ski in accordance with nozzle adjustment of hydraulic damper.
Dynamic Responses Optimization of Vacuum Circuit Breaker Using Taghchi Method
Jo, Jun Yeon ; Ahn, Kil Young ; Kim, Sung Tae ; Yang, Hong Ik ; Kim, Kyu Jung ;
Transactions of the KSME C: Industrial Technology and Innovation, volume 3, issue 2, 2015, Pages 141~148
DOI : 10.3795/KSME-C.2015.3.2.141
In this study, the VCB(Vacuum Circuit Breaker) has been developed using the Recurdyn that is widely used on multibody dynamics analysis. The VCB consists of three main circuits with the VI(Vacuum Interrupter) and the main frame with the operating mechanism. This analytic model is validated by comparing the simulation results and the experimental results. Generally, in order to reliably cut off the breaking current, the opening speed of the VCB after contact separation has to be a 0.9~1.1m/s. Therefore, the study of the design parameters of the VCB is needed. To improve the opening velocity, Taguchi design method is applied to optimize the design parameters of a VCB with a lot of linkages. In addition, to evaluate the improvement of the operating characteristics, the simulation results are compared with the Recurdyn and experimental results with improved prototype sample.
The Future of CAE as a Disruptive Innovation
Kim, Sangtae ;
Transactions of the KSME C: Industrial Technology and Innovation, volume 3, issue 2, 2015, Pages 149~154
DOI : 10.3795/KSME-C.2015.3.2.149
Disruptive innovation means the innovation which obsoletes the existing technology by a new technology. Like the examples of disruptive innovation, film camera and digital camera and PC and laptop, CAE technology can be regarded as a disruptive technology which can raise the disruptive innovation. CAE technology which is being improved dramatically with the development of the related technologies brings the innovation in the design and validation process in manufacturing industry. This innovation can change the rule of the market so that the researchers, companies and CAE enginnees should pay attention to it. Also not only the improvement of the technology but also the training and cultivation of the engineers who can utilize CAE technology are very important and cannot be neglected.
The Efficient Dynamic Modeling of a Manipulator Robot System
Song, In-Ho ; Ryu, Han-Sik ; Choi, Jin-Hwan ;
Transactions of the KSME C: Industrial Technology and Innovation, volume 3, issue 2, 2015, Pages 155~164
DOI : 10.3795/KSME-C.2015.3.2.155
Recently, the robot manipulators are needed more slim size and longer reach and more accurate movement for increasing productivity. So, in this paper, the simulation modeling method and the efficient modeling method for new slim & long reach robot has been investigated for forecasting the slim robot performance before making prototype. To do this investigation, the major parts of robot driving system such as motor, belt and reducer devices and parts assembly method have been investigated mainly. And then, using this developed modeling method the new designed robot will be forecasted about the dynamic performance of new designed robot.