Field Testing of “Reference Vehicles” as an Aid to the Design Analysis Process for Earthmoving Equipment

1978 ◽  
Author(s):  
Jack W. Martz ◽  
R. Gene Smiley ◽  
Joseph G. Kormos
Keyword(s):  
Field Testing ◽  
Design Analysis ◽  
Analysis Process ◽  
Earthmoving Equipment

scholarly journals Utilizing the Generic Design Analysis (GDA) Process Model Within an Extended Set of Design Analysis Contexts

2017 ◽  
Author(s):  
Martin Eriksson ◽  
Håkan Petersson ◽  
Damien Motte ◽  
Robert Bjärnemo
Keyword(s):  
Design Optimization ◽  
Process Model ◽  
Method Development ◽  
Design Analysis ◽  
Process Models ◽  
Design Solution ◽  
Design Parameters ◽  
Analysis Process ◽  
Physical Testing ◽  
Generic Design

In most industrial product development projects, computer-based design analysis, or simply design analysis, is frequently utilized. Several design analysis process models exist in the literature for the planning, execution and follow-up of such design analysis tasks. Most of these process models deal explicitly with design analysis tasks within two specific contexts: the context of design evaluation, and the context of design optimization. There are, however, several more contexts within which design analysis tasks are executed. Originating from industrial practice, four contexts were found to represent a significant part of all design analysis tasks in industry. These are: 1. Explorative analysis, aiming at the determination of important design parameters associated with an existing or predefined design solution (of which design optimization is a part). 2. Evaluation, aiming at giving quantitative information on specific design parameters in support of further design decisions. 3. Physical testing, aiming at validating design analysis models through physical testing, that is, determining the degree to which models are accurate representations of the real world from the perspective of the intended uses of the models. 4. Method development, that is the development, verification and validation of specific guidelines, procedures or templates for the design analyst and/or the engineering designer to follow when performing a design analysis task. A design analysis process model needs to be able to deal with at least these four. In this work, a process model named the generic design analysis (GDA) process model, is applied to these four contexts. The principles for the adaptation of the GDA process model to different contexts are described. The use of the GDA process model in these contexts is exemplified with industrial cases: explorative analysis of design parameters of a bumper beam system, the final physical acceptance tests of a device transportation system (collision test, drop test, vibration test), and the method development of a template for analyzing a valve in a combustion engine. The “Evaluation” context is not exemplified as it is the most common one in industry. The GDA process model has been successfully used for the four contexts. Using the adaptation principles and industrial cases, the adaptation of the GDA process model to additional contexts is also possible.

scholarly journals Output voltage characteristic in system lighting road based on heat pipe and thermoelectric

2018 ◽  
Vol 67 ◽  
pp. 02058
Author(s):  
Wayan Nata Septiadi ◽  
Made Ricki Murti ◽  
Arliyandi ◽  
I.G.A. Pristha Arvikadewi ◽  
I Putu Yuda Pramana Putra
Keyword(s):  
Solar Radiation ◽  
Heat Pipe ◽  
Output Voltage ◽  
Waste Heat ◽  
Asphalt Pavement ◽  
Field Testing ◽  
Cold Side ◽  
Analysis Process ◽  
System Output ◽  
Novel Design

A novel design of a thermal management pavement system is introduced in this paper. The basic concept behind this design is a utilize of waste heat from asphalt pavement have as a base a heat pipe and thermoelectric for energy of street lighting. In this system, output voltage is influenced by difference in temperature between hot side and cold side of thermoelectric. The intensity of solar radiation at hourly is variant, so the resulting of output voltage fluctuated. The research method by field testing direct exposed solar radiation on the variation time at 09.00; 10.00; 11.00; 12.00; 13.00; 14.00; 15.00; 16.00 Indonesia Central Standard Time. The data of this research are surface temperature of asphalt pavement, difference in temperature between hot side and cold side of thermoelectric, and output voltage of system. The analysis process by quantitative experimental. In this research, the output voltage increased from 09.00 until 13.00, and after that time the output voltage decreased.

scholarly journals Integration of Computer Aided Design Analysis Into the Engineering Design Process for Use by Engineering Designers

2013 ◽  
Author(s):  
Håkan Petersson ◽  
Damien Motte ◽  
Martin Eriksson ◽  
Robert Bjärnemo
Keyword(s):  
Product Development ◽  
Engineering Design ◽  
Process Model ◽  
Development Process ◽  
Integrated Design ◽  
Design Analysis ◽  
Product Development Process ◽  
Technical Solution ◽  
Analysis Process ◽  
Analysis Methods

When developing products, engineering designers often face the problem that their candidate for a technical solution, ranging from a concept to a detailed design, needs to be analyzed by a design analyst before it is approved or rejected and the engineering designer can continue his/her activities within the product development process. If engineering designers have to send every solution candidate to a design analyst, a lot of time and money is lost. To avoid this, some Swedish companies have started to allow their engineering designers to use the analysis capabilities imbedded in modern CAD/CAE software. In the literature on product development and on computer based design analysis (CBDA) both processes are fairly well described. However, this cannot be said about the interaction between the two processes. This is a growing issue as it represents core knowledge for developing efficient and effective integration concepts, which in turn can be developed into likewise efficient and effective approaches on how to assist the engineering designer to perform parts of the CBDA process on his/her own. Note that when we refer to CBDA here, this is confined to the use of FEM in the development of products, primarily based on working principles originating from the area of Mechanical Engineering. Since we have been working on a process model for the integration between engineering design and design analysis, this has inspired us to utilize findings from these efforts to propose a conceptual model for a design analysis process driven by the engineering designer to be integrated into the product development process. The proposed design analysis process model is based on the use of predefined analysis methods or templates. Templates are also utilized for QA (Quality Assurance) and monitoring of the analysis activities. Responsible for the development of the analysis methods and the templates are expert design analysts, who develop these tools within a technology development process. Before allowing the engineering designers access to them, these tools need to be approved by relevant bodies within the industrial enterprise and/or by external sources such as those responsible for certification and risk management. In this paper we present the development of the proposed integrated design analysis process model and an industrial case study, which incorporates a non-linear design analysis activity, utilizing the FEM-program Abaqus within the CAD-software Catia V5 and its imbedded optimization module.

Design, Analysis, and Field Testing of an Innovative Drone-Assisted Zero-Configuration Localization Framework for Wireless Sensor Networks

2017 ◽  
Vol 66 (11) ◽  
pp. 10322-10335 ◽  
Author(s):  
Zijun Gong ◽  
Cheng Li ◽  
Fan Jiang ◽  
Ruoyu Su ◽  
Ramachandran Venkatesan ◽  
...  
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Field Testing ◽  
Design Analysis ◽  
Wireless Sensor

scholarly journals Design Analysis of Pump as Turbine for a Coastal Region of Nigeria

2019 ◽  
Vol 4 (3) ◽  
pp. 52-58
Author(s):  
Mudiaga Obriki ◽  
Kpegele Le-ol Anthony ◽  
Nkoi Barinyima
Keyword(s):  
Coastal Region ◽  
Design Analysis ◽  
Design Parameters ◽  
System Efficiency ◽  
Governing Equations ◽  
Analysis Process ◽  
Higher Power ◽  
Design Software ◽  
Power Outputs ◽  
Rivers State

This research details the design analysis process of a 100 kW Pump as Turbine (PAT) micro hydro system for Sangama Community in the Asari-Toru Local Government of Rivers State, Nigeria. In order to achieve this, governing equations of fluid flow in pumps and pipes were applied to determine suitable design parameters of the system components, and also to select appropriate pump configuration. A design software, PAT+, was built in C# to help perform the design computations involved, although the software can be applied to PAT design for any expected power rating and desired system efficiency. From the results obtained, t was seen that a single stage pump of 28644 rpm operating at a head of 19.23 metres was suitable to generate the expected power. Parameters were varied and plots generated to show the effect of some parameters on the other, and it was deduced that the system head is inversely proportional to the flow rate. Also, for higher power outputs, higher design heads would be needed, although expected design output of a PAT should not exceed 100kW.

EVALUATION OF SELECTED EARTHMOVING EQUIPMENT FOR THE RESTORATION OF OIL-CONTAMINATED BEACHES

1971 ◽  
Vol 1971 (1) ◽  
pp. 505-522 ◽  
Author(s):  
James D. Sartor ◽  
Carl R. Foget
Keyword(s):  
San Francisco ◽  
Operating Cost ◽  
Field Testing ◽  
Optimum Operating ◽  
Oil Sand ◽  
Research Company ◽  
Two Phases ◽  
And Performance ◽  
Full Scale Tests ◽  
Earthmoving Equipment

ABSTRACT Research studies were conducted to evaluate the use of selected earthmoving equipment in oil-contaminated beach-restoration operations and to determine the cost and effectiveness of such equipment Specifically, the objectives were to:Determine modifications and cost required to improve the capacity of selected equipment.Develop optimum operating procedures for each method.Determine, through field testing, the operating cost of each method evaluated. These objectives were accomplished in two phases. Phase I: reviewed procedures utilized in previous beach-restoration operations, plus surveyed and evaluated commercially available earthmoving equipment. Phase II: conducted full-scale tests to demonstrate the restoration procedures developed and to determine the efficiency with which each procedure/equipment item collects oil-contaminated material The flexibility and performance characteristics of the equipment were tested under a variety of beach conditions. The oil removal effectiveness was greater than 98% for all restoration procedures. The highest effectiveness was achieved using the motorized grader and motorized elevating scraper working in combination. The tracked front end loaders were least effective. On beaches possessing low shear strength, flotation tires or steel-belted half-tracks on the motorized grader and a non-self-propelled elevating scraper with a tracked prime mover should be used. Conveyor-screening systems can be effectively utilized to load oil-contaminated material into trucks for transport to disposal areas, separate oil-sand pellets from clean sand, and partially separate oil-contaminated debris (i.e., straw, kelp, seaweed) from oil-contaminated sand The beach-restoration operations evaluated in this study were successfully utilized in the restoration of oil-contaminated beaches resulting from the recent San Francisco Bay oil spill incident. This study was conducted in fulfillment of Contract No. 14-12-811 between The Federal Water Quality Office, and The URS Research Company.

scholarly journals Dynamic Design Analysis Method DDAM

1996 ◽  
Vol 3 (6) ◽  
pp. 461-476 ◽  
Author(s):  
Gene M. Remmers ◽  
George J. O’Hara ◽  
Patrick F. Cunniff
Keyword(s):  
Earthquake Engineering ◽  
Large Scale ◽  
Field Testing ◽  
Design Analysis ◽  
Current Status ◽  
Response Analysis ◽  
Engineering Practice ◽  
Analysis Method ◽  
Dynamic Design ◽  
Basic Physics

This article describes the evolution of the dynamic design analysis method (DDAM) by assimilating information from references spanning more than three decades. This evolution began with attempts to use earthquake engineering practice, circa 1950, in dealing with hostile environments created by modern weaponry. It became necessary to develop new theories that went beyond the then current status. This led to research programs that went back to basic physics and engineering principles that resulted in a sound technique for naval applications. The elements of the technique were theoretically based and confirmed by laboratory and large scale field testing. One important example is the structural interaction effects between a vehicle and large equipment structures by means of a newly defined quantity called modal effective mass. Another example led to the discovery that attaching a vibration generator to a structure in an effort to find the frequencies useful for foundation motion response analysis was guaranteed to produce failure. DDAM continues to be used after its introduction 36 years ago. Although familiar in US and international naval circles, it is not well known by persons other than naval engineers. Many myths and misconceptions have grown during this period, so some of the major ones are addressed.

Classical analysis of preloaded bolted joint load distributions

2018 ◽  
Vol 9 (4) ◽  
pp. 455-464
Author(s):  
Michael Welch
Keyword(s):  
Structural Integrity ◽  
Design Analysis ◽  
Bolted Joints ◽  
Stress Range ◽  
Design Standards ◽  
Content Type ◽  
Analysis Process ◽  
Load Distributions ◽  
Joint Load ◽  
External Loads

Purpose The purpose of this paper is to develop the understanding of how external loads are reacted through preloaded bolted joints and the interaction of the joint elements. The paper develops ideas from how to do an analysis to understanding the implications of the results. Design/methodology/approach Classical methods of analysis are applied to preloaded bolted joints, made with multiple bolts. The paper considers both the detailed analysis of bolts stresses, fatigue analysis and load-based design analysis, to demonstrate the structural integrity of preloaded bolted joints. Findings In preloaded joints the external tensile axial load and moments are mainly supported by changes in contact pressure at the faying surface. Only a small proportion of the external loads produce changes in bolt tensile stress. The bolts have a significant mean stress but experience a low working stress range. This low stress range is a factor in explaning why preloaded bolted joints have good fatigue performance. Practical implications In many cases the methods presented are adequate to demonstrate the structural integrity of joints. In some cases finite element methods may be more appropriate, and the methods discussed can be used in the validation process. Originality/value The paper brings together a number of concepts and links them into a practical design analysis process for preloaded bolted joints. Interpretation of results, within the context of design standards, is provided.

scholarly journals Aseismic pile foundation design analysis

1993 ◽  
Vol 26 (1) ◽  
pp. 49-160 ◽  
Author(s):  
M. J. Pender
Keyword(s):  
Pile Foundation ◽  
Field Testing ◽  
Worked Examples ◽  
Design Analysis ◽  
Pile Foundations ◽  
Preliminary Design ◽  
Foundation Design ◽  
Main Thrust ◽  
Dynamic Excitation ◽  
Seismic Forces

Methods of assessing, for preliminary design purposes, the stiffness and capacity of pile foundations under seismic forces are presented. Although the main thrust of the paper is to aseismic design the methods are applicable to other forms of dynamic excitation of pile foundations. Emphasis is placed on expressions for pile stiffness and capacity in the form of simple formulae that can be incorporated into spreadsheet or similar types of software. The use of the equations is illustrated with a number of worked examples. Where possible the methods are justified by data from field testing of foundations at prototype scale.

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