Impact force analysis

Calculating earthquake-resistant underground structures is becoming more and more important in general design, many civil structures in the field of constructions over the world have used different tools to calculate this problem.

10p viengels 25-08-2023 9 4   Download

In this paper, we compare two types of commonly used wheel-track interaction models for wheel-rail impact problems, i.e., a beam and a continuum finite element model. We first reveal the differences between the impact forces predicted by the two models due to a typical rail squat using a time-frequency analysis.

16p guernsey 28-12-2021 19 0   Download

Lecture Well Drilling Engineering: Drilling Hydraulics (cont’d) - Dr. Do Quang Khanh. After completing this section, you will understand knowledge about: effect of buoyancy on buckling, the concept of stability force, stability analysis, mass balance, energy balance, flow through nozzles, hydraulic horsepower, hydraulic impact force,...

38p bachkhinhdaluu 03-12-2021 13 1   Download

Lecture Well Drilling Engineering: Jet Bit Nozzle Size Selection - Dr. Do Quang Khanh. After completing this section, you will understand knowledge about: nozzle size selection for optimum bit hydraulics like max. nozzle velocity, max. bit hydraulic horsepower, max. jet impact force; graphical analysis; surge pressure due to pipe movement;...

34p bachkhinhdaluu 03-12-2021 14 1   Download

This paper investigates the potential wage impacts of a shift to more environmentally sustainable production patterns. The empirical analysis is carried out using labour force survey data and interval regressions.

15p inception36 30-11-2021 22 2   Download

This paper applies the method of literature review and labor economic theory analysis to assess the impact of the demographic transition and industrial revolution 4.0 on the labor market, particularly in Vietnam. The analysis of this paper relies on nationally representative secondary data, such as data from the Population and Housing Census and the Vietnam Household Living Standards Survey, as well as from related documents.

12p huyetthienthan 23-11-2021 7 2   Download

The purpose of this study is to construct a suitable contact algorithm for BSMPM and then use it to investigate the contact force caused by impact. Some numerical examples are presented in this paper, the impact of two circular elastic disks and the impact of a soft circular disk into a stiffer rectangular block. All the results of contact force obtained from this study are compared with finite element results and perform a good agreement, the energy conservation is also considered.

9p nguaconbaynhay12 13-06-2021 9 1   Download

Over the past three decades of agricultural renovation since 1989, Vietnam has made great strides in boosting agricultural development. Its agricultural production value, added values, product volume, and exports have grown significantly.

11p chauchaungayxua2 04-01-2020 38 0   Download

This angle is considered as a harmonic oscillation function around the equilibrium position that is the initial angle of impact, and its angular frequency equals of the rivulet and the cable. The amplitude of impact angle of wind depends on wind velocity, initial position and that of rivulet. The assumption is verified by comparison with experimental results. The effects of rivulet oscillation components and aerodynamic forces are also discussed in this paper.

15p elandorr 05-12-2019 18 1   Download

This article represents the result of a research on the impact of cutting parameters including the number of segments, cutting depth and feed rate on cutting force P in grinding hardened steel SKD11 using segmented grinding wheel by Taguchi method and analysis of variance (ANOVA).

10p cumeo3000 01-08-2018 34 1   Download

Chapter 1 - The information age in which you live: Changing the face of business. This chapter define management information systems (MIS) and describe the three important organizational resources within it - people, information, and information technology; describe how to use break-even analysis to assess the financial impact of information technology; describe how to use Porter's Five Forces Model to evaluate the relative attractiveness of and competitive pressures in an industry.

14p tangtuy17 11-07-2016 54 2   Download

Since the dawn of civilisation human society has been shaped by its interaction with water—whether too much or too little. Indeed, water is one of the powerful forces of nature that have formed the planet on which we live. Floods are not new—they continually make news because of both tragic effects on individuals and acts of heroism in the emergency. The impact of floods on people can be dramatic even if there are no fatalities; pictures of rescue make good television material with stories told of bravery and fortunate escapes.

328p namde04 02-05-2013 61 7   Download

KPMG LLP and the Center for Automotive Research (CAR) joined forces in developing this white paper to examine the forces of change, the current and emerging technologies, the path to bring these innovations to market, the likelihood that they will achieve wide adoption from consumers, and their potential impact on the automotive ecosystem. Our research included interviews with more than 25 thought leaders, automotive and high- tech executives, and government officials as well as analysis of industry trends.

0p nhacnenzingme 23-03-2013 66 5   Download

Characterizing the evolution of Internet topology is important to our understanding of the Internet architecture and its interplay with technical, economic and social forces. A major challenge in obtaining empirical data on topology evolution is to identify real topology changes from the observed topology changes, since the latter can be due to either topology changes or transient routing dynamics. In this paper, we formulate the topology liveness problem and propose a solution based on the analysis of BGP data.

12p doiroimavanchuadc 06-02-2013 47 3   Download

The principal scenario for the analysis was a forced entry by U.S. forces into rough and heavily foliaged terrain to neutralize Red forces and stop ethnic cleansing. A second scenario considered an offensive mission in more open terrain. The briefing then draws upon broader reasoning and approximate analysis to suggest tentative conclusions,

0p xuan2013 29-01-2013 38 1   Download

Congress is considering a comprehensive overhaul of the nationżs immigration laws more than a decade after the enactment of strict immigration measures. Current U.S. immigration laws mandate deportation of lawful permanent resident (LPR) parents of thousands of U.S. citizen children, without providing these parents an opportunity to challenge their forced separations. Through a multi-disciplinary analysis, this policy brief examines the experiences of U.S. citizen children impacted by the forced deportation of their LPR parents and proposes ways to reform U.S.

26p konbetocroi 07-01-2013 55 3   Download

Many critical survival issues are related to uneven development, poverty, and population growth. They all place unprecedented pressures on the planet's lands, waters, forests, and other natural resources, not least in the developing countries. The downward spiral of poverty and environmental degradation is a waste of opportunities and of resources. In particular, it is a waste of human resources. These links between poverty, inequality, and environmental degradation formed a major theme in our analysis and recommendations.

38p yeurauxanh88 28-09-2012 90 4   Download

Vessel Collision Design of Bridges 60.1 60.2 Introduction Background • Basic Concepts • Application 60 Initial Planning Selection of Bridge Site • Selection of Bridge Type, Configuration, and Layout • Horizontal and Vertical Clearance • Approach Spans • Protection Systems 60.3 Waterway Characteristics Channel Layout and Geometry • Water Depth and Fluctuations • Current Speed and Direction 60.4 Vessel Traffic Characteristics Physical and Operating Characteristics • Vessel Fleet Characteristics 60.5 60.

19p naunho 27-12-2010 103 7   Download

Impact Effect of Moving Vehicles 56.1 56.2 Mingzhu Duan Quincy Engineering, Inc. 56 56.3 56.4 56.5 Philip C. Perdikaris Case Western Reserve University Introduction Consideration of Impact Effect in Highway Bridge Design Consideration of Impact Effect in Railway Bridge Design Free Vibration Analysis Structural Models • Free Vibration Analysis Wai-Fah Chen Purdue University Forced Vibration Analysis under Moving Load Dynamic Response Analysis • Summary of Bridge Impact Behavior 56.

20p naunho 27-12-2010 101 8   Download

CASE The Personal Computer Industry in 1998 Introduction The Macroenvironment The Demographic Environment The Political Environment The Social/Cultural Environment Technological Developments The Global Environment Assessing the Impact of the General Environment The Competitive Environment The Five Forces Model of Industry Attractiveness Threat of New Entrants Bargaining Power of Buyers Bargaining Power of Suppliers The Nature of Rivalry in the Industry Threat of Substitutes Strategic Groups and the Industry Environment Defining the Strategic Group Strategic Groups in the Personal Computer ...

30p dangnamth 19-10-2010 218 26   Download