Simulation Analysis of Upper Mould Base for High Speed Punch

2011 ◽  
Vol 101-102 ◽  
pp. 427-430
Author(s):  
Rui Yin Song ◽  
Mei Qin Zhang ◽  
Chen Tang ◽  
Lei Li
Keyword(s):  
High Speed ◽  
Working Condition ◽  
Simulation Analysis ◽  
Simulation Models ◽  
Frequency Condition ◽  
Temperature Changes ◽  
Thermal Boundary Conditions ◽  
Mould Base ◽  
Simulation Results ◽  
Set Up

Based on two kinds of upper mould bases real structures of high speed punch, the structure was simplified and simulation models were built in next step. According to working condition of actual temperature changes and moving characteristics for the high speed punch, the thermal boundary conditions, the thermal- stress coupling conditions and mechanical constraint conditions of the simulation model were set up, and the deformation for the guiding hole of upper mould base were got through simulation analysis. Through the comparison of the two simulation results, it illustrated that the improved upper mould base is more suitable for high speed punch with high punch frequency condition.

Design and Robustness of Quilt Packaging Superconnect

2012 ◽  
Vol 2012 (1) ◽  
pp. 000524-000530
Author(s):  
M. Ashraf Khan ◽  
Jason M. Kulick ◽  
Alfred M. Kriman ◽  
Gary H. Bernstein
Keyword(s):  
Thermal Cycling ◽  
High Speed ◽  
Low Cycle Fatigue ◽  
Simulation Models ◽  
Electrical Performance ◽  
Cycle Fatigue ◽  
Signal Delay ◽  
Thermal Reliability ◽  
Simulation Results ◽  
Quilt Packaging

Quilt Packaging (QP) is a novel high-speed superconnect (i.e. direct interchip interconnect), developed to improve electrical performance — signal delay, power loss, etc. Ultrahigh bandwidth has already been demonstrated for QP, but its unique structure requires thermal reliability issues to be studied. To this end, simulation models were developed to study the robustness of QP. QP structures were fabricated, and thermal cycling tests were performed focusing on the reliability for various shapes of nodules, the basic physical interconnect unit of QP. Simulations were performed to determine stress over a range of temperatures and estimate low cycle fatigue lifetimes. Simulations considered two types of solder and several adhesives. Thermal cycling experiments indicate that QP provides a robust structure, in agreement with the simulation results.

Simulation Analysis on Passing Curve of Urban Track Vehicle

2011 ◽  
Vol 308-310 ◽  
pp. 1956-1960
Author(s):  
Yan Yan Zuo ◽  
Qing Bin Chang
Keyword(s):  
Simulation Analysis ◽  
Calculation Model ◽  
Track Irregularity ◽  
Simulation Results ◽  
Set Up

In order to study the curve passing performance of urban track vehicle and to evaluate its safety, the calculation model was established and simplified. Then track irregularity was used as input and passing curve was set up. The simulation modal was produced with software SIMPACK. With the track irregularity, the traveling safety of the vehicle was analyzed. The simulation results show that the traveling safety of the track vehicle could satisfy the requirement of relevant standard.

Study of Commercial Vehicle Active Seat Suspension

2013 ◽  
Vol 441 ◽  
pp. 641-644
Author(s):  
Gong Yu Pan ◽  
Hai Yang ◽  
Yong Tian Liu
Keyword(s):  
Optimal Control ◽  
Control System ◽  
Commercial Vehicle ◽  
Control Method ◽  
Simulation Models ◽  
Seat Suspension ◽  
Optimal Control Method ◽  
Simulation Results ◽  
Set Up ◽  
Vehicle Seat

A 7-DOF half-car dynamic model which includes the cab mounting system and seat suspension system was established to study the performance of active seat suspension. The optimal control method was applied to design the active control system. Two dynamic simulation models of the passive seat suspension and the active seat suspension were set up by Matlab/Simulink, and the performance of the passive and active seat system was simulated in the time and frequency domain. The simulation results show that the active seat suspension can greatly improve the vehicle seat performance and the study has supplied the academic reference in the applications of the active seat suspension.

scholarly journals Simulation analysis of underwater working condition of ship rudder blade based on Fluent

2021 ◽  
Vol 2108 (1) ◽  
pp. 012006
Author(s):  
Haowei Zhao ◽  
Guifeng Liu ◽  
Jianggui Han
Keyword(s):  
Numerical Calculation ◽  
Power Plant ◽  
Working Conditions ◽  
Working Condition ◽  
Simulation Analysis ◽  
Normal Operation ◽  
Damage And Failure ◽  
Influence Of Water ◽  
Simulation Results ◽  
Numerical Calculation Method

Abstract The rudder blade is an important power plant of the ship. Removing damage and failure is the premise of the normal operation of the ship. In this paper, the numerical calculation method is used, combined with K-ɛ (k-epsilon model) and S-A (spalart allmaras) turbulence model, the underwater working conditions of ship rudder blade are analyzed, and the influence of water flow impact at different angles of attack on the damage failure of rudder blade components is discussed. The simulation results show that when the ship is sailing at constant speed, with the change of water attack angle, the main distribution range of rudder blade stress deviates, and the lift and resistance of rudder blade are also gradually increasing, which is easy to damage the parts with concentrated stress. It has theoretical guiding significance for the protection and repair of rudder blade damage.

Studying the Impact of Return Current Path on the EM Simulation of High-speed Package Designs

2011 ◽  
Vol 2011 (1) ◽  
pp. 000061-000068
Author(s):  
Darryl Kostka ◽  
Antonio Ciccomancini Scogna
Keyword(s):  
High Speed ◽  
Ground Plane ◽  
Three Dimensional ◽  
Simulation Models ◽  
Current Path ◽  
Cavity Resonances ◽  
Simulation Results ◽  
The Impact ◽  
Simulation Time

Three-dimensional electromagnetic simulation models are often simplified in order to reduce the simulation time and memory requirements without sacrificing the accuracy of the results. A commonly adopted methodology in the simulation of electronic package designs is to truncate the size of the package model leaving only a few important features surrounding the nets of interest. In this paper we demonstrate that this simplification can have a significant impact of the simulation results if it is not performed carefully and it can introduce spurious/non physical resonances. The interaction between cavities and signals is first studied using a simple coupled differential via test structure. It is demonstrated that the return currents generated by these vias excite cavity resonances in power-ground plane pairs causing them to behave as parallel-plate waveguides. The role of interplane shorting vias in suppressing cavity resonances is then investigated and the impact of boundary conditions on the simulation results of package models is also shown and discussed. Finally, a realistic complex multilayer package model is analyzed and it is demonstrate that through proper truncation of the geometry, accurate results can be obtained.

Design and Robustness of Quilt Packaging Superconnect

2013 ◽  
Vol 10 (1) ◽  
pp. 8-14 ◽  
Author(s):  
M. Ashraf Khan ◽  
Jason M. Kulick ◽  
David Kopp ◽  
Patrick Fay ◽  
Alfred M. Kriman ◽  
...  
Keyword(s):  
Thermal Cycling ◽  
High Speed ◽  
Low Cycle Fatigue ◽  
Simulation Models ◽  
Electrical Performance ◽  
Cycle Fatigue ◽  
Signal Delay ◽  
Thermal Reliability ◽  
Simulation Results ◽  
Quilt Packaging

Quilt packaging (QP) is a novel high-speed super-connect (i.e., direct interchip interconnect), developed to improve electrical performance—signal delay, power loss, and so on. Ultrahigh bandwidth has already been demonstrated for QP, but its unique structure requires thermal reliability issues to be studied. To this end, simulation models were developed to study the robustness of QP. QP structures were fabricated, and thermal cycling tests were performed focusing on the reliability for various shapes of nodules, the basic physical interconnect unit of QP. Simulations were performed to determine stress over a range of temperatures and estimate low cycle fatigue lifetimes. Simulations considered two types of solder and several adhesives. Thermal cycling experiments indicate that QP provides a robust structure, in agreement with the simulation results.

Research of Double Internal Model Control for High Speed Spindle

2013 ◽  
Vol 288 ◽  
pp. 202-207 ◽  
Author(s):  
Jie Meng ◽  
Zhen Zhen Lei ◽  
Ze Lun Li
Keyword(s):  
Internal Model ◽  
High Speed ◽  
Control Method ◽  
Structural Characteristics ◽  
Internal Model Control ◽  
Flux Linkage ◽  
Control Plan ◽  
Model Control ◽  
Simulation Results ◽  
Set Up

Based on the internal model control theory and combined the structural characteristics of high speed spindle, the control method of high speed spindle is discussed. And the view of applying the double internal model control to high speed spindle is put forward. Then controllers of current, flux linkage and speed are designed. According to the double internal model control plan, its simulation model is set up. Simulation results indicate that the double internal model control has better dynamic response curve, shorter response time, higher steady state precision by comparing with the vector controller.

Experimental Investigation of the Effect of Waves, Ventilation and Cavitation in Bollard Pull Conditions

2013 ◽  
Author(s):  
G. Hagesteijn ◽  
J. Brouwer
Keyword(s):  
High Speed ◽  
Working Condition ◽  
Ambient Pressure ◽  
Towing Tank ◽  
High Speed Video ◽  
Video Recordings ◽  
Wave Basin ◽  
Correct Representation ◽  
Set Up ◽  
The Eu

Ventilation is a feared working condition of ship propulsors, especially in Dynamic Positioning operation, since it leads to the lost of thrust of the propeller resulting into an uncontrollable ship. Experience showed that the risk of ventilating propellers was negligently underestimated in traditional towing tank experiments but better predicted in depressurised towing tanks, where the ambient pressure is scaled down according to Froude similarity. In 2012 MARIN’s Depressurized Wave Basin (DWB) has taken into service. This unique facility is the only one in the world that is able to generate waves in a large depressurized towing tank. This ensures correct representation of the pressure inside the enclosed ventilation bubbles and vortices, resulting into a correct physic behaviour. The EU-funded Streamline project was the first project for which ventilation inception measurements were carried out in the DWB. Tests were carried out with a fully instrumented podded ship model, sailing and in bollard pull condition, in waves and depressurised conditions. In order to acquire detailed load measurements, MARIN used their in house developed 6 component and 5 component transducers. The 6 component transducer was used for measuring the omnidirectional propeller loads, while the 5 component transducer was used for measuring 2 blade forces and 3 blade moments. At the same time synchronised high speed video recordings were made to acquire insight in the occurring phenomena. In the present paper a description of the test set up will be presented briefly, followed by a discussion of the recordings and the observations that were made for bollard pull condition in waves.

Study on Simulation of Fuel Economy of Hybrid Electric Vehicle

2011 ◽  
Vol 101-102 ◽  
pp. 374-378 ◽  
Author(s):  
Peng Fei Zhang ◽  
Sui Xian Yang ◽  
Qiao Peng
Keyword(s):  
Electric Vehicle ◽  
Fuel Economy ◽  
Hybrid Electric Vehicle ◽  
High Speed ◽  
Simulation Models ◽  
Work Conditions ◽  
Simulation Approach ◽  
Power Performance ◽  
Speed Condition ◽  
Simulation Results

Fuel economy is one of the important factors for hybrid electronic vehicle (HEV), which would has great impact on fabrication and sale of HEV. A HEV should be designed to achieve best power performance and high fuel economy. In this paper, the fuel economy of HEVs, both parallel and serial, have been investigated by simulation approach. INSIGHT which is produced by HONDA Corporation has been employed as an example of parallel HEV (PHEV). The power parameters of serial HEV (SHEV) have been set according to references. After that, the simulation models for both PHEV and SHEV have been established. Three kinds of work conditions including UDDS, HWFET and ECE-EUDC have been simulated with software ADVISOR 2002. The conclusions have been reached by analyzing the simulation results, which indicate that PHEV has difference fuel economy performance from SHEV. PHEV is suitable for working at high speed condition, whereas SHEV is satisfactory to low speed and frequently startup case, for example, running in downtown.

Studying the Impact of Return Current Path on the EM Simulation of High-Speed Package and Board Designs

2012 ◽  
Vol 9 (2) ◽  
pp. 52-64
Author(s):  
Darryl Kostka ◽  
Antonio Ciccomancini Scogna
Keyword(s):  
High Speed ◽  
Ground Plane ◽  
Three Dimensional ◽  
Simulation Models ◽  
Combined Model ◽  
Current Path ◽  
Cavity Resonances ◽  
Simulation Results ◽  
The Impact

Three-dimensional electromagnetic simulation models are often simplified in order to reduce simulation time and memory requirements without sacrificing the accuracy of the results. A commonly adopted methodology in the simulation of complex electronic package and board designs is to truncate the size of the model, leaving only a few important features surrounding the nets of interest. In this paper we demonstrate that this simplification can have a significant impact on the simulation results if it is not performed carefully, and it can introduce spurious nonphysical resonances. The interaction between cavities and signals is first studied using a simple coupled differential via test structure. It is demonstrated that the return currents generated by these vias excite cavity resonances in power-ground plane pairs causing them to behave as parallel-plate waveguides. The role of interplane shorting vias in suppressing cavity resonances is then investigated and the impact of boundary conditions on the simulation results of package models is also shown and discussed. The focus is then shifted to PCB/package cosimulation and the impact of different truncation schemes is discussed through the simulation of test structures of varying complexity. A simulation methodology is then proposed and is verified for a combined model of a realistic complex multilayer package and board and it is demonstrated that accurate results can be obtained through proper truncation of the geometry.

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