SAE transactions最新文献_第2页

Stochastic Modeling of Terrain Profiles and Soil Parameters 地形剖面和土壤参数的随机建模

SAE transactions Pub Date : 2005-11-01 DOI: 10.4271/2005-01-3559

C. Sandu, Adrian Sandu, Lin Li

引用次数: 31

Vehicle-borne Scanning for Detailed 3D Terrain Model Generation 车载扫描生成详细的三维地形模型

SAE transactions Pub Date : 2005-11-01 DOI: 10.4271/2005-01-3557

Brad Grinstead, A. Koschan, D. Page, A. Gribok, M. Abidi

引用次数: 21

Managing System Effects of Traction Bars Implemented on a Hotchkiss Suspension 管理牵引杆在霍奇基斯悬架上的系统效果

SAE transactions Pub Date : 2005-11-01 DOI: 10.4271/2005-01-3624

Ian Zook, D. Kirby, Nagaraj Siddegowda

{"title":"Managing System Effects of Traction Bars Implemented on a Hotchkiss Suspension","authors":"Ian Zook, D. Kirby, Nagaraj Siddegowda","doi":"10.4271/2005-01-3624","DOIUrl":"https://doi.org/10.4271/2005-01-3624","url":null,"abstract":"This paper describes the implementation effort behind adding a pair of suspension links between the axle and frame of a light truck with a Hotchkiss-type suspension. These links, referred to as anti-windup bars (or traction bars), were introduced into an existing system to improve NVH performance; however, doing so required modifications to maintain other vehicle attributes, including vehicle safety and durability life. The authors address the management of these attributes and related design decisions for the components involved, focusing on the conflicting requirements involved. Physical vehicle testing, using design revisions recommended by Finite Element (FE) simulations, was performed to confirm component performance and related system behavior. Test results suggested improvements to the FE models that were required to more closely approximate the vehicle's behavior. Several of these FE model improvements and component design iterations were implemented simultaneously, resulting in effective anti-windup bar and frame structure design revisions. These design revisions improved the system's ability to manage the energy inputs to the system during vehicle durability and crash testing.","PeriodicalId":21404,"journal":{"name":"SAE transactions","volume":"11 1","pages":"278-284"},"PeriodicalIF":0.0,"publicationDate":"2005-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82603132","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Semiactive Fuzzy Logic Control for Heavy Truck Primary Suspensions: Is it Effective? 重型卡车主悬架半主动模糊控制是否有效?

SAE transactions Pub Date : 2005-11-01 DOI: 10.4271/2005-01-3542

M. Ahmadian

{"title":"Semiactive Fuzzy Logic Control for Heavy Truck Primary Suspensions: Is it Effective?","authors":"M. Ahmadian","doi":"10.4271/2005-01-3542","DOIUrl":"https://doi.org/10.4271/2005-01-3542","url":null,"abstract":"Using a simulation model, this study intends to provide a preliminary evaluation of whether semiactive dampers are beneficial to improving ride and handling in class 8 trucks. One of the great challenges in designing a truck suspension system is maintaining a good balance between vehicle ride and handling. The suspension components are often designed with great care for handling, while maintaining good comfort. For Class 8 trucks, the vehicle comfort is also greatly affected by the cab and seat suspensions. Dampers for passive suspensions are tuned \"optimally,\" using various metrics that the ride engineer may consider, for the condition in which the truck operates most frequently. In recent years, the popularity of semiactive dampers in passenger vehicles has prompted the possibility of considering them for class 8 trucks. In this study, the vehicle safety versus ride comfort trade-off is studied for a certain class of suspensions with semiactive fuzzy control. The proposed semiactive fuzzy control is based on the control policies that are commonly known as skyhook and groundhook. After describing the mathematical details of the proposed semiactive fuzzy control, it is applied to a roll-plane model of a heavy truck in order to compare its performance with conventional passive suspensions. The results of this study show that although semiactive suspensions with fuzzy logic control can improve vehicle roll, they could result in larger peak accelerations and a harsher ride.","PeriodicalId":21404,"journal":{"name":"SAE transactions","volume":"11 1","pages":"157-165"},"PeriodicalIF":0.0,"publicationDate":"2005-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75540270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Further Analysis of Potential Road/Terrain Characterization Rating Metrics 进一步分析潜在的道路/地形表征评级指标

SAE transactions Pub Date : 2005-11-01 DOI: 10.4271/2005-01-3562

J. G. Howe, Dongchan Lee, J. Chrstos, O. Balling, T. Myers, R. Allen, D. Gorsich, Alexander A. Reid

引用次数: 4

An assessment of drag reduction devices for heavy trucks using design of experiments and computational fluid dynamics 重型卡车减阻装置的实验设计与计算流体力学评估

SAE transactions Pub Date : 2005-11-01 DOI: 10.4271/2005-01-3526

Ilhan Bayraktar, D. Landman, W. Cary, R. Wood, J. Flamm, C. Hunter

引用次数: 19

Cyclic Deformation, Fatigue and Fracture Toughness of a Nano-Composite High Strength Steel 纳米复合高强钢的循环变形、疲劳和断裂韧性

SAE transactions Pub Date : 2005-11-01 DOI: 10.4271/2005-01-3629

Hong Lin, Mick Deis, Thomas A. Woodard, D. Combs, Robert R. Binoniemi

引用次数: 3

Optimization of Acoustical Behavior of Sound Absorptions Based on Finite Element Modeling 基于有限元模型的吸声性能优化

SAE transactions Pub Date : 2005-11-01 DOI: 10.4271/2005-01-3580

A. Ohadi, M. Moghaddami

引用次数: 0

Simulation Study of Dual Clutch Transmission for Medium Duty Truck Applications 中型载重汽车双离合变速器仿真研究

SAE transactions Pub Date : 2005-11-01 DOI: 10.4271/2005-01-3590

Xubin Song, Jason Liu, Daniel G. Smedley

{"title":"Simulation Study of Dual Clutch Transmission for Medium Duty Truck Applications","authors":"Xubin Song, Jason Liu, Daniel G. Smedley","doi":"10.4271/2005-01-3590","DOIUrl":"https://doi.org/10.4271/2005-01-3590","url":null,"abstract":"Dual clutch based transmissions (DCT) have been developed for passenger vehicles in Europe. Compared to a single clutch based transmission (SCT), DCT eliminates torque interrupts during gear-shifting so that the vehicles can run as smooth as one using an automatic transmission (AT). Traditionally AT needs to use torque converters to transmit engine torque to drivelines. However, a torque converter is complicated and expensive, and offers lower driveline efficiency than SCT and DCT. DCT technology is a cost-effective avenue to achieve smooth shifting while taking advantage of the some beneficial features of both AT and SCT. This paper presents the results of an analysis of the application of DCT on medium duty (MD) trucks. First, we set up a 6-speed DCT with two groups of three gear ratios in correspondence to two ceramic dry clutches. Clutch dampers are included in the DCT model. For simplicity but without loss of generality, the synchronizers are not included for this study. Then, based on this DCT model, a complete powertrain for a MD truck is modeled from engine to wheels. The grade, rolling resistance and air resistances are considered in the model as well. A speed based shifting strategy is adopted for this simulation study. Finally, we run the DCT based model to show both transmission and vehicle dynamics. For comparison purposes, an SCT based vehicle model is built too with the same 6-speed ratios for DCT. The simulation results show that DCT can make smoother shifting than SCT and avoid engine flaring. Tentative conclusions will be presented in the final section.","PeriodicalId":21404,"journal":{"name":"SAE transactions","volume":"177 1","pages":"264-270"},"PeriodicalIF":0.0,"publicationDate":"2005-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74077783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 24

Compliant Control of Electric Power Assisted Steering Systems 电动助力转向系统的柔性控制

SAE transactions Pub Date : 2005-11-01 DOI: 10.4271/2005-01-3535

A. Cetin, Banu Sinanoglu, Serdar Gungor, A. Kanbolat, M. Adli

引用次数: 7