New Approaches of Geotechnical Engineering: Soil Characterization, Sustainable Materials and Numerical Simulation

Abstract Development of Solid Freeform Fabrication (SFF) systems has created the opportunity for new approaches in design of functional components, which leverages the inherent strengths of both experiment and numerical simulation. This paper describes an approach in which the computational models are integrated with the rapid prototyping fabrication processes. The parts are fabricated using different materials including wax, PZT, silicone nitride, and 17-4PH stainless steel powders for the SFF hardware (Langrana et al, 2000, Qiu et al, 1999, Danforth et al, 1998) and Ciba-Geigy SL-resin for SLA hardware (Higgins and Langrana, 1998, Higgins and Langrana 1999). The components such as turbine blades, actuators, and fixtures have been designed, simulated and fabricated. The properties of parts have been and are being quantified in terms of accuracy and quality.

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Numerical Simulation Analysis of Isolation Pile-Steel Shotcrete Combined Support of Deep Foundation Pit Excavation

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.638-640.507 ◽

2014 ◽

Vol 638-640 ◽

pp. 507-511

Author(s):

Chong Ma ◽

Xin Gang Wang ◽

Bin Hu ◽

Hong Bing Zhan

Keyword(s):

Numerical Simulation ◽

Geotechnical Engineering ◽

Rapid Development ◽

Engineering Problem ◽

Simulation Software ◽

Deep Foundation ◽

Foundation Pit ◽

Support Design ◽

Deep Foundation Pit ◽

Design And Construction

The rapid development of deep foundation pit engineering, has become an important part of the urbanization construction, which brings deep excavation support of geotechnical engineering problem research also became a major issue. This paper uses the international well-known geotechnical engineering numerical simulation software FLAC3D, through 3D finite difference numerical calculation and analysis, to better simulation calculation and analysis of deep foundation pit construction site condition, forecast after excavation of the deep foundation pit deformation displacement and dangerous position, analysis of deep foundation pit excavation process isolation pile - steel shotcrete combined support effect. Three dimensional numerical model analysis and calculation in deep foundation pit engineering design and construction scheme optimization with economy is convenient wait for a obvious advantages, can for deep foundation pit excavation of deep foundation pit support design and construction to provide effective basis.

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New approaches to numerical simulation of two-component droplet evaporation

2013 International Conference on Materials for Renewable Energy and Environment ◽

10.1109/icmree.2013.6893800 ◽

2013 ◽

Author(s):

Lili Zhang ◽

Yanbin Shi

Keyword(s):

Numerical Simulation ◽

Droplet Evaporation ◽

New Approaches ◽

Two Component

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Utilization of Sustainable Materials to Enhance Geotechnical Characteristics of Soils

International Journal of Engineering & Technology ◽

10.14419/ijet.v7i2.1.11043 ◽

2018 ◽

Vol 7 (2.1) ◽

pp. 54

Author(s):

Rama Subba Rao, G.V

Keyword(s):

Rice Husk ◽

Soil Stabilization ◽

Rice Husk Ash ◽

Geotechnical Engineering ◽

Fine Sand ◽

Waste Materials ◽

Engineering Practice ◽

Geotechnical Characteristics ◽

Sustainable Materials ◽

By Products

Geotechnical engineering can noticeably affect the sustainability of infrastructure development because of its beginning place in the construction practice. Utilization of waste materials for enhancing properties of the soil is a wise choice and is also one step towards accomplishing sustainable development. Application of by-products (viz., flay ash and rice husk ash) which could be defined as “sustainable materials”, find special place in the modern-day soil stabilization and modification exercise. The preset paper aims at enhancing properties of expansive soil with inclusion of industrial by-products namely Rice Husk ash and Fly Ash. Further the present paper focuses on improving geotechnical characteristics of fine sand upon reinforcing with ground shredded rubber tire. Fine sand has a low angle of internal friction and which in turn has low shear strength. Reuse of waste materials is one area of research which attempts to makes geotechnical engineering practice sustainable.

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Numerical Simulation and Analysis of Centrifuge Model Tests with Nonhomogeneous Materials in Geotechnical Engineering

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.353-356.495 ◽

2013 ◽

Vol 353-356 ◽

pp. 495-501

Author(s):

Lie Xian Tang ◽

Lian Jun Guo ◽

Da Ning Zhang ◽

Jian Ming Zheng

Keyword(s):

Numerical Simulation ◽

Model Test ◽

Geotechnical Engineering ◽

Model Tests ◽

Centrifuge Model Test ◽

Test Model ◽

Geotechnical Centrifuge ◽

Centrifuge Model ◽

Centrifuge Tests ◽

Centrifuge Model Tests

The primary methods are antetype observation and model tests which to check the actual engineering status in geotechnical engineering field. The antetype observation is the best direct and convictive method, but approach miscellaneous and spend hugely. The general model tests can not fulfil the same stress between model and antetype. Geotechnical centrifuge model test can not only minish the measure of model and fulfil the comparability condition, but also can found all kinds of non-symmetrical models and simulation all kinds of complicated engineering. So the geotechnical centrifuge model test is applied widely in the geotechnical engineering. This paper used the RFPA-Centrifuge and recured to the principle of geotechnical centrifuge model test, evaluated the safety of model only by increase the physical strength. Though the numerical calculating in nonhomogeneous models with different scales showed that stress, displacement and failure mode were accord with conform ratio of centrifuge model tests. Showed the advantage that the results of RFPA can be validated each other with results of physical tests. For some specifical complicated items in geotechnical engineering, make a good test model is not only very hard and have to spend much time, but also need expensive test equipment and much money for test materials. It is very good if we can use a method to conquer these shortages. So it is advisable that using the mechod which geotechnical centrifuge tests combine RFPA-Centrifuge numerical simulation analysis method.

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