scholarly journals Development of Tower Crane Simulation System with Flexible Wire Rope

2015 ◽  
Author(s):  
Xin Wang ◽  
Yu-lan Lv ◽  
Di Wu
Keyword(s):  
Wire Rope ◽  
Simulation System ◽  
Tower Crane ◽  
Flexible Wire

Co-Simulation Procedure for Multibody Reeving Systems

2018 ◽  
Author(s):  
Grzegorz Orzechowski ◽  
Aki M. Mikkola ◽  
José L. Escalona
Keyword(s):  
Multibody System ◽  
Wire Rope ◽  
Rigid Bodies ◽  
Arbitrary Lagrangian Eulerian ◽  
Transverse Deformation ◽  
Absolute Position ◽  
Eulerian Approach ◽  
Wire Ropes ◽  
Simulation Procedure ◽  
Flexible Wire

In this paper, co-simulation procedure for a multibody system that includes reeving mechanism will be introduced. The multibody system under investigation is assumed to have a set of rigid bodies connected by flexible wire ropes using a set of sheaves and reels. In the co-simulation procedure, a wire rope is described using a combination of absolute position coordinates, relative transverse deformation coordinates and longitudinal material coordinates. Accordingly, each wire rope span is modeled using a single two-noded element by employing an Arbitrary Lagrangian-Eulerian approach.

scholarly journals Dynamic Modeling and Analysis of Impact in Space Operation Tasks

Aerospace ◽  
2021 ◽  
Vol 8 (12) ◽  
pp. 381
Author(s):  
Yaxing Cai ◽  
Yujun Chen ◽  
Yazhong Luo ◽  
Xinglong Wang
Keyword(s):  
Dynamic Model ◽  
Dynamic Models ◽  
Wire Rope ◽  
Rigid Bodies ◽  
Modeling And Analysis ◽  
Flow Table ◽  
Model Foundation ◽  
Flexible Wire ◽  
The Impact ◽  
Space Operation

For the rigid impact and flexible impact in space operation tasks, impact dynamic models between two objects are established in this paper, laying the model foundation for controlling or suppressing the impact. For the capture task between a grapple shaft and a rigid body, the impact dynamic model is established based on the Zhiying–Qishao model. Moreover, by introducing a friction factor into the original impact model, an improved dynamic model between two rigid bodies is proposed. For the capture task with flexible impact, an impact dynamic model between the grapple shaft and a flexible wire rope is established based on the dynamic model of the flexible wire rope. The ground experiments and simulations are carried out with two objects on an air flow table. The experiment results validate the impact dynamic model proposed in this paper.

Multibody Dynamics and Competitiveness on the Company

2005 ◽  
Author(s):  
Etsujiro Imanishi
Keyword(s):  
New Product Development ◽  
Multibody Dynamics ◽  
Good Accuracy ◽  
New Products ◽  
New Product ◽  
System Optimization ◽  
Wire Rope ◽  
Advanced Technology ◽  
Design Stage ◽  
Tower Crane

This paper presents how the multibody dynamics is utilized in the company. In recent years, the advance evaluations considering the dynamics of the products become to be the mainstream on the design state in new product development. Moreover, the multibody dynamics is utilized to develop the advanced technology of the new products. As it becomes to be possible that the dynamics of the products is examined even in the design stage at the good accuracy by the progress of the multibody dynamics, the essential solutions and the quantitative evaluations can be carried out in the development of the new products. In the development of the completely new concept machine, the multibody dynamics is necessary to carry out the system optimization of the machine. In this paper, the activities using the multibody dynamics are introduced through the cases of the evaluation on the disorder winding of the wire rope in the tower crane, and the evaluation of the power consumption in the hydraulic excavator.

scholarly journals An evaluation of safety risk factors during installation and dismantling of tower cranes in construction sites

2021 ◽  
Vol 39 (4) ◽  
pp. 992-1000
Author(s):  
A.A. Salihu ◽  
S.S. Aliyu ◽  
M. Abubakar
Keyword(s):  
Risk Factors ◽  
Construction Industry ◽  
Safety Issue ◽  
Wire Rope ◽  
Construction Sites ◽  
Safety Risk ◽  
Probability Of Occurrence ◽  
Tower Crane ◽  
Abrasion Wear ◽  
Wear And Tear

The construction industry plays a central and significant role in the economy of any nation. One of the major reasons for ineffective project delivery in the Nigerian construction industry is the improper assessment of risk factors. The industry however is currently facing a lot of challenges which include constant increase in the rate of accidents on construction sites which could be dueto ineffective safety management as construction companies are usually interested in maximizing their profit in order to secure funds for new investments, and cover possible expenses associated with the occurrence of risk factors during construction. Installation anddismantling of tower crane had been previously looked at as a general safety issue until, recent research showed that about 69% of accidents related to tower cranes in Korea from 2001-2011, occur during installation and dismantling process. In view of this, this paper aimed at evaluating safety risk factors during installation and dismantling by determining their probability of occurrence and degree of impact with a view to establishing the most significant ones. This is why a well-structured questionnaire was designed to collect data with respect to their probability of occurrence and degree of impact using a 5 point Likert scale. Responses from the administered questionnaire and interactions were collated, interpreted and analysed using descriptive statistics (mean) and results presented in tables. Results showed that abrasion (wear and tear of components such as bolts, nuts, or pins) is the most probable factor with a mean value of 3.63. Fracture of a wire rope during dismantling had the highest degree of impact with a mean valueof 4.63. The research concluded that fracture of a wire rope during dismantling and abrasion (wear and tear of components such as bolts, nuts, or pins) are highly affecting factor on safety during installation and dismantling. Adoption of a preventive maintenance strategy or routine check on the tower crane parts and components could help minimize the probability of occurrence and impact of the safety risk factors on site. Keywords: Accident, Hazard, Safety risk, Tower crane, Probability, Construction industry. 

Three Systems of Wire Rope Transport

1882 ◽  
Vol 13 (328supp) ◽  
pp. 5226-5228
Author(s):  
William Thomas Henney Carrington
Keyword(s):  
Wire Rope

Evaluation of a computerized cardiovascular simulation system using patient-specific data

2013 ◽  
Vol 61 (S 01) ◽  
Author(s):  
M Kaur ◽  
N Sprunk ◽  
U Schreiber ◽  
R Lange ◽  
J Weipert ◽  
...  
Keyword(s):  
Simulation System ◽  
Patient Specific ◽  
Specific Data ◽  
Cardiovascular Simulation
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