Seung-Ho Ham, Myung-Il Roh, Hye-Won Lee, "Simulation of Load Lifting with Equalizers Used in Shipyards", Automation in Construction, Vol. 61, pp. 98-111, 2016.02.01
Seung-Ho Ham, Myung-Il Roh, Hye-Won Lee, "Simulation of Load Lifting with Equalizers Used in Shipyards", Automation in Construction, Vol. 61, pp. 98-111, 2016.02.01
첨부 '1' |
---|
Abstract | One of the most commonly used pieces of equipment for lifting a load is the equalizer of a crane in shipbuilding production. The equalizer distributes the tension in wire ropes between the load and equipment equally. While the equalizer is composed simply of several fixed and moving pulleys, themechanismof an equalizer is not easy to adapt to physics-based simulations because only onewire rope is coiled around all of the pulleys. Thus, instead of the real mechanism of the equalizer, an alternative mechanism, such as stretching or shortening the initial lengths of the wire ropes, logically, has been used in previous simulations. In this study, a mass-less constraint-based wire rope is adopted to realize the real mechanism of the equalizer. The constant length constraint is used to realize one wire rope among the fixed and moving equalizer pulleys. We derive a discrete Euler–Lagrange (DEL) equation to represent the motion of a multibody system including the constraint wire ropes. The DEL equation is shown to be numerically stable for the case of linear holonomic constraints, such as the constant length constraint. Wetest several series of fixed and moving pulleys andmodel the equalizer based on the real mechanism. Finally, the equalizer based on the real mechanism is applied to two typical lifting cases in shipbuilding production. One is lifting a load using a Goliath cranewith three equalizers and the other is to use a floating cranewith one equalizer and two crawler cranes. As a result, the tensions in the wire ropes connected to the load are adjusted equally as the position of the moving pulleys and the orientation of the equalizer change. |
---|---|
Publication Date | 2016-02-01 |
Role | Corresponding Author |
Category | SCIE |
Impact Factor | 2.442 |
-
이수호, 안현식, 허윤, 배재류, 김기수, 함승호, 이성민, 노명일, "해양 공사 EPC 견적용 중량 추산 방법에 관한 기초 연구", 대한조선학회 논문집, Vol. 53, No. 2, pp. 154-161, 2016.04.01
-
김기수, 노명일, 김성용, 안진우, "잠수함의 구획 및 장비 배치 최적화를 위한 배치 템플릿 모델", 한국CAD/CAM학회 논문집, Vol. 21, No. 1, pp. 51-60, 2016.03.01
-
Sol Ha, Nam-Kug Ku, Myung-Il Roh, "Event-based Scenario Manager for Multibody Dynamics Simulation of Heavy Load Lifting Operations in Shipyards", International Journal of Naval Architecture and Ocean Engineering, Vol. 8, No. 1, pp. 83-101, 2016.01.01
-
Seung-Ho Ham, Myung-Il Roh, Hye-Won Lee, "Simulation of Load Lifting with Equalizers Used in Shipyards", Automation in Construction, Vol. 61, pp. 98-111, 2016.02.01
-
Seung-Ho Ham, Myung-Il Roh, Hye-Won Lee, Sol Ha, "Multibody Dynamic Analysis of a Heavy Load Suspended by a Floating Crane with Constraint-based Wire Rope", Ocean Engineering, Vol. 109, pp. 145-160, 2015.11.15
-
Dong-Hoon Jeong, Myung-Il Roh, Seung-Ho Ham, "Lifting Off Simulation of an Offshore Supply Vessel Considering Ocean Environmental Loads and Lifting Off Velocity", Ocean Systems Engineering, Vol. 5, No. 3, pp. 181-198, 2015.09.01
-
Sol Ha, Tae-Sub Um, Myung-Il Roh, Hyun-Kyoung Shin, “A Structural Weight Estimation Model of FPSO Topsides Using an Improved Genetic Programming Method”, Ships and Offshore Structures, Vol. 12, No. 1, pp. 43-55, 2017.01.01
-
Luman Zhao, Myung-Il Roh, “A Thrust Allocation Method for Efficient Dynamic Positioning of a Semisubmersible Drilling Rig Based on the Hybrid Optimization Algorithm”, Mathematical Problems in Engineering, Vol. 2015, pp. 1-12, 2015.10.01
-
함승호, 노명일, 김주성, 이혜원, 하솔, "환경 하중을 고려한 침몰 선체의 물리 기반 인양 시뮬레이션", 대한조선학회 논문집, Vol. 5, No. 5, pp. 387-394, 2015.10.01
-
Hye-Won Lee, Myung-Il Roh, Seung-Ho Ham, Sol Ha, "Dynamic Simulation of the Wireline Riser Tensioner System for a Mobile Offshore Drilling Unit Based on Multibody System Dynamics", Ocean Engineering, Vol. 106, pp. 485-495, 2015.09.15
-
Ki-Su Kim, Myung-Il Roh, Sol Ha, "Expert System Based on the Arrangement Evaluation Model for the Arrangement Design of a Submarine", Expert Systems with Applications, Vol. 42, No. 22, pp. 8731-8744, 2015.12.01
-
Luman Zhao, Myung-Il Roh, Jeong-Woo Hong, "Optimal Thrust Allocation for Dynamic Positioning of Deep-sea Working Vessel", Journal of Advanced Research in Ocean Engineering, Vol. 1, No. 2, pp. 94-105, 2015.06.01
-
Sol Ha, Seong-Ho Seo, Myung-Il Roh, Hyun-Kyoung Shin, "Simplified Nonlinear Model for the Weight Estimation of FPSO Plant Topside Using the Statistical Method", Ships and Offshore Structures, Vol. 11, No. 6, pp. 603-619, 2016.09.01
-
Sol Ha, Nam-Kug Ku, Myung-Il Roh, Ho-Jin Hwang, "Multibody System Dynamics Simulator for Process Simulation of Ships and Offshore Plants in Shipyards", Advances In Engineering Software, Vol. 85, pp. 12-25, 2015.07.01
-
엄태섭, 노명일, 신현경, "개선된 유전적 프로그래밍 방법을 이용한 부유식 해양 구조물의 중량 추정 모델 연구", 대한조선학회 논문집, Vol. 52, No. 1, pp. 1-7, 2015.02.01
-
Nam-Kug Ku, Ara Jo, Sol Ha, Myung-Il Roh, Kyu-Yeul Lee, "Automatic Generation of Equations of Motion for Multibody System in Discrete Event Simulation Framework", Procedia Technology, Vol. 1, No. 1, pp. 55-64, 2012.02.01
-
정세용, 노명일, 신현경, "최적화 기법을 이용한 부유식 해양 플랜트 상부 구조의 다층 배치 모델", 대한조선학회 논문집, Vol. 52, No. 1, pp. 77-87, 2015.02.01
-
구남국, 노명일, 하솔, 신현경, "다물체계 운동 방정식 선형화를 통한 해상 풍력 발전기 동적 거동의 주파수 영역 해석 방법에 관한 연구", 한국CAD/CAM학회 논문집, Vol. 20, No. 1, pp. 84-92, 2015.03.01
-
서성호, 노명일, 신현경, "비선형 회귀 분석을 이용한 부유식 해양 구조물의중량 추정 모델 연구", 대한조선학회 논문집, Vol. 51, No. 6, pp. 530-538, 2014.12.01
-
Nam-Kug Ku, Sol Ha, Myung-Il Roh, "Crane Modeling and Simulation in Offshore Structure Building Industry", International Journal of Computer Theory and Engineering, Vol. 6, No. 3, pp. 278-284, 2014.06.01