Boom System Kinematic Simulation of Truck-Mounted Concrete Pump

2011 ◽  
Vol 201-203 ◽  
pp. 185-188 ◽  
Author(s):  
Xin Xiang Zhou ◽  
Nan Nan Ren ◽  
Shu Jun Guo ◽  
Yan Ling Tang ◽  
Rong Liang Tian
Keyword(s):  
Working Conditions ◽  
Three Dimensional ◽  
Paper Study ◽  
Time Curve ◽  
Kinematic Simulation ◽  
Simulation Process ◽  
Solid Works ◽  
Force Time ◽  
Concrete Pump ◽  
A Company

In this paper, we study the boom of truck-mounted concrete pump from a company. After analyzing, we determine that the four booms extending horizontally is the most dangerous working conditions. We use the software Solid Works to design three-dimensional entity. With the help of Cosmos Motion which is a part of Solid Works, realizing the kinematic simulation. This paper study and analyze the problems during the simulation process, and collect a series of curves of kinematic simulation, mainly including the place-time curve, velocity-time curve and force-time curve, and analyze these curves detailedly.

Strength and Finite Element Analysis of the Boom System of Truck-Mounted Concrete Pump

2011 ◽  
Vol 295-297 ◽  
pp. 2079-2082 ◽  
Author(s):  
Xin Xiang Zhou ◽  
Yu Cui ◽  
Nan Nan Ren ◽  
Yan Ling Tang ◽  
Shu Jun Guo ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Stress Analysis ◽  
Working Conditions ◽  
Three Dimensional ◽  
Operating Mode ◽  
Element Analysis ◽  
Solid Works ◽  
Concrete Pump ◽  
A Company

This paper takes the boom of truck-mounted concrete pump from a company as the study subject. After analyzing its working station, it can be found that the fourth boom is in the most dangerous working conditions when extending horizontally. Select this operating mode, carry on the stress analysis and three dimensional entity modeling with the project software Solid Works to it, then realize the boom's statics finite element analysis with Solid Works plug-in unit Cosmos Works.

The Application of Virtual Prototyping Technology in the Kinematic Analysis of Hydraulic Excavator Working Device

2012 ◽  
Vol 538-541 ◽  
pp. 3235-3239
Author(s):  
Hai Hong Chen ◽  
Jian Ping Zi
Keyword(s):  
Virtual Environment ◽  
Working Conditions ◽  
Kinematic Analysis ◽  
Simulation Analysis ◽  
Virtual Prototyping ◽  
Three Dimensional ◽  
Hydraulic Excavator ◽  
Kinematic Simulation ◽  
Virtual Prototyping Technology ◽  
Working Device

Three-dimensional software Solidworks and ADAMS were combined together to establish the virtual prototyping model of hydraulic excavator working device in this paper. Various real typical working conditions of excavators were simulated in the virtual environment, then kinematic simulation analysis was conducted, and the main mining parameters in different conditions were given, the results provide a basis for the design of excavator working device.

Modal Analysis of the Boom System of Truck-Mounted Concrete Pump

2011 ◽  
Vol 403-408 ◽  
pp. 3620-3625
Author(s):  
Xin Xiang Zhou ◽  
Chang Lu Xu ◽  
Nan Nan Ren ◽  
Shu Jun Guo ◽  
Rong Liang Tian
Keyword(s):  
Finite Element ◽  
Modal Analysis ◽  
Structural Characteristics ◽  
Three Dimensional ◽  
Mode Shapes ◽  
Element Analysis ◽  
High Effect ◽  
The Finite Element Analysis ◽  
Solid Works ◽  
Concrete Pump

This In this paper, we study the boom of truck-mounted concrete pump, we determine that the four booms extending horizontally is the most dangerous working conditions. This paper bases on Pump arm boom functional and structural characteristics, strength, stiffness, stability. By Finite element method, the dynamic characteristics of arm pump is analysed. we use Solid Works to design three-dimensional entity. and, in the finite element analysis of Solid Works plug-in Cosmos Work environment we finish the theoretical modal analysis. We get its top ten natural frequencies and mode shapes, and analyze the results .This method is designed for high effect and quality Pump arm boom ,providing precise reliable data.

scholarly journals Analysis of Vehicle Collision on an Assembled Anti-Collision Guardrail

Sensors ◽  
2021 ◽  
Vol 21 (15) ◽  
pp. 5152
Author(s):  
Juncheng Yao ◽  
Bo Wang ◽  
Yujie Hou ◽  
Liang Huang
Keyword(s):  
Working Conditions ◽  
Traffic Accidents ◽  
Analysis Software ◽  
Time Curve ◽  
Vehicle Collisions ◽  
Moving Vehicle ◽  
Vehicle Collision ◽  
New Type ◽  
Main Girder ◽  
Protective Performance

Traffic accidents such as vehicle collisions with bridge guardrails occur frequently. These accidents cause damage to the driver and the vehicle as well as the bridge. A new type of assembled anti-collision guardrail is proposed in this study. LS-DYNA is a nonlinear display dynamic analysis software used to evaluate the safety of a new type of assembled anti-collision guardrail. A specific, numerically analyzed model of vehicle–guardrail collision is established using LS-DYNA. The energy distribution–time curve of the vehicle collision process is obtained. After comparison with measured data from the vehicle collision test, the model of vehicle–guardrail collision is verified as being correct. Based on this, we analyze the process of a vehicle collision on the assembled anti-collision guardrail. The result shows that the assembled anti-collision guardrail proposed in this paper can better change the trajectory of a moving vehicle and can prevent the vehicle from falling off the bridge. From the car body collision results, the assembled anti-collision guardrail for bridges proposed in this paper can reduce vehicle damage and can protect the driver effectively. From the analysis of the main girder stress on the bridge, an anti-collision guardrail installed on an existing bridge will not cause damage to the main girder during a collision. In order to study the influence of the four parameters on the anti-collision effect, we carried out a comparative calculation of multiple working conditions. The results show that the new type of assembled anti-collision guardrail has good protective performance under different working conditions.

Using the Force-Time Curve to Detect Maximal Grip Strength Effort

2007 ◽  
Vol 20 (1) ◽  
pp. 37-48 ◽  
Author(s):  
Orit Shechtman ◽  
Bhagwant S. Sindhu ◽  
Paul W. Davenport
Keyword(s):  
Grip Strength ◽  
Time Curve ◽  
Force Time

The Relationship Between Isometric Force-Time Curve Characteristics and Club Head Speed in Recreational Golfers

2012 ◽  
Vol 26 (10) ◽  
pp. 2685-2697 ◽  
Author(s):  
Brian K. Leary ◽  
Jason Statler ◽  
Britton Hopkins ◽  
Rachael Fitzwater ◽  
Tucker Kesling ◽  
...  
Keyword(s):  
Isometric Force ◽  
Time Curve ◽  
Club Head ◽  
Force Time ◽  
The Relationship ◽  
Recreational Golfers

Control of Rapidly Executed Forces to a Target

1987 ◽  
Vol 65 (3) ◽  
pp. 827-836
Author(s):  
Donald Siegel
Keyword(s):  
Visual Feedback ◽  
Predictor Variable ◽  
Peak Force ◽  
Important Predictor ◽  
Force Amplitude ◽  
Time Curve ◽  
Time To Peak ◽  
Hand Grip ◽  
Rapid Responses ◽  
Force Time

The purpose of the present study was to determine whether initial measures of impulse (i.e., area under the force-time curve) could be used to predict peak force (PF) in hand grip responses of 5- and 10-kg amplitude executed as rapidly as possible. 12 subjects performed 75 practice and 25 test contractions in each condition, with and without visual feedback. The time to peak (PT) for the 5-kg responses was 41 msec., while the 10-kg condition averaged 56 msec. Analyses demonstrated no effect for visual feedback. Correlational analyses of cumulative impulse sections from 5 msec., to PF within conditions showed that early measures of force within a response were not very good predictors of final force amplitude. Indeed, for both conditions upwards of 85% of a reponse needed to have occurred before 50% of PF variance could be predicted. Analyses across conditions demonstrated that 50% of PF variance could be predicted between 15 and 20 msec. PT was also an important predictor variable. By using PT along with cumulative impulse 50% of the variance in PF could be predicted prior to 10 msec., at 5 kg (25% of PT) and at about 15 msec., for 10 kg (27% of PT). Across conditions, 85% of the variance in PF was predictable by 5 msec. Such results suggest that either more refined response indices are needed in predicting response outcome or that even for very rapid responses some lower level “tuning” probably occurs after initiation.

scholarly journals Optimization of Liquid Scintillation Counting Conditions With Two Kinds of Vials and Detector Shields for Low-Activity Radiocarbon Measurements

Radiocarbon ◽  
1989 ◽  
Vol 31 (03) ◽  
pp. 380-386 ◽  
Author(s):  
Gemma Rauret ◽  
J S Mestres ◽  
J F Garcia
Keyword(s):  
Working Conditions ◽  
Spectrum Analysis ◽  
Liquid Scintillation ◽  
Three Dimensional ◽  
Pulse Height ◽  
Quality Parameters ◽  
Scintillation Counting ◽  
Background Reduction ◽  
Low Activity ◽  
Bias Selection

Low-level radiocarbon measurements were made using two liquid scintillation (LS) counters, both with passive lead shields of approximately the same dimensions. The first one had a conventional background reduction with low-activity lead and “high-low” coincidence bias selection, and the second one had a spectrum analysis background reduction based on the different three-dimensional pulse-height signal of background and beta pulses. The performance of commercial teflon-copper and glass vials were compared with both LS counters. Optimum counting conditions for the two detectors studied were also established. From results obtained, quality parameters and characteristics of quench curves were studied. Performances of each counter in the working conditions established were also compared.

Environmental Conditions of the Work Organization for the Disabled People

2000 ◽  
Vol 44 (8) ◽  
pp. 70-70
Author(s):  
Ewa Górska
Keyword(s):  
Working Conditions ◽  
Environmental Conditions ◽  
Social Economic ◽  
Sense Of Self ◽  
Work Organization ◽  
Disabled People ◽  
The Disabled ◽  
The Individual ◽  
A Company

A disabled person in a company is affected by a number of various environmental conditions. Among these the most important are such as organizational, technical, social, economic and, finally, legal working conditions. The standard and quality of the just mentioned conditions determine significantly the way in which a disabled person performs the assigned tasks and duties in the company and it also helps to create the individual sense of self-fulfillment and work satisfaction. What is more, at the same time the level of environmental conditions influences directly work efficiency and profits of the company. It must be clearly stated that working conditions do not appear immediately and spontaneously - they need careful planning and modern organization. This research paper presents the environmental conditions and discusses a model design of the work organization for the disabled people.

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