Journal of Computing in Civil Engineering, Apr 1, 1999
Digital imaging analysis was used to study localized deformations in granular materials tested un... more Digital imaging analysis was used to study localized deformations in granular materials tested under plane strain condition. Two independent techniques were applied and compared. In the first technique, the digitized optical images of a grid printed on the latex membrane were ...
Flexible Boundary for Discrete Element Simulation of Granular Assemblies. M Borsboom, J Groeneweg... more Flexible Boundary for Discrete Element Simulation of Granular Assemblies. M Borsboom, J Groeneweg, N Doorn, M van Gent Engineering Mechanics( 1996), 884-893. 63 Mathematics and Computation(CE).
This proceedings, Engineering, Construction and Operations in Space III, consists of over 200 pap... more This proceedings, Engineering, Construction and Operations in Space III, consists of over 200 papers presented at Space '92, the Third International Conference on Engineering, Construction and Operations in Space held in Denver, Colorado on May 31-June 4, 1992. The papers focus on 18 diversified technical areas. Some of these areas cover such topics as: 1) Planetary surface structures on the Moon and Mars; 2) space resources and in situ materials utilization; 3) space energy; 4) space mining and excavation; 5) space automation and robotics; 6) life support systems; 7) lunar-based astronomy; and 8) space education. A special session was devoted to graduate student papers.
Test results are presented showing the post-peak response of concretes of three different strengt... more Test results are presented showing the post-peak response of concretes of three different strengths under triaxial stress states. These test results clearly show the transition from brittle to ductile behavior under increasing confinement, the residual strength, and the strain behavior at ...
A servo-controlled multiaxial cubical test apparatus has recently been used to investigate the be... more A servo-controlled multiaxial cubical test apparatus has recently been used to investigate the behavior of the foundation soil for a gravity structure in Norton Sound of the Alaska Outer Continental Shelf. The undrained stress-strain, strength, and pore water pressure responses were measured during cyclic loading events that simulated conditions existing under the platform when subjected to realistic storm wave loading.
Journal of Engineering Mechanics-asce, Oct 1, 2002
As I pass the Editorship to my successor, I am very pleased to report that the Journal of Enginee... more As I pass the Editorship to my successor, I am very pleased to report that the Journal of Engineering Mechanics maintains its position among the leading society-based, archival journals in the broad field of applied mechanics, in particular the field of mechanics that has its base in civil engineering. The journal remains among the largest ASCE journals in terms of the number of papers published, as well as being among the most visible and productive mechanics journals based on readership, impact, and citations. The number of manuscripts submitted has continuously grown over the years, and in 2001 the number was 344. The total number of papers published during the 12 months ending in May, 2002, was 156. Nearly one-half of the papers published come from overseas, which is a particular testimony to the international nature of the journal and mechanics in general. The journal receives a constant stream of high quality papers, and we expect this trend to continue. During the past 5 years, we have devoted on the average two issues each year to special topics to stimulate readership and authorship in related fields of mechanics with the expectation to grow the journal in these areas. While the performance indicators and statistics for the journal are generally very favorable, the Editorial Board members and I are concerned that a large number of reviews are long overdue, which does not reflect well on the journal and often frustrates talented authors, who may publish their papers elsewhere. It is very important that our authors know that the journal will process their papers quickly and fairly, and at the same time provide meaningful reviews. Another area of grave concern is the increasing number of cases involving multiple paper submissions and publications, which both violate the integrity of the journal and copyright agreements. In recent cases, the journal has barred offending authors from publishing for a period of 10 years. Clearly, the journal is deeply concerned about these developments and is making major efforts to address the issues. This year marks ASCE’s 150th anniversary, and the journal is joining the celebration by publishing three invited papers by outstanding scholars in the field of mechanics in separate issues this fall. The subjects range from past achievements, state-of-the-art reviews, and future trends. As Editor, it has been my very good fortune to witness firsthand many new exciting developments in mechanics, both in terms of theory and experiments. This has been one of the most rewarding and exciting tasks I have had, and I thank you so much for the opportunity to serve the broad mechanics community. As I bid you farewell, please join me in welcoming the new Editor, Professor Mircea Grigoriu from Cornell University, who officially takes over on October 1, 2002.
This proceedings, Engineering, Construction and Operations in Space III, consists of over 200 pap... more This proceedings, Engineering, Construction and Operations in Space III, consists of over 200 papers presented at Space '92, the Third International Conference on Engineering, Construction and Operations in Space held in Denver, Colorado on May 31-June 4, 1992. The papers focus on 18 diversified technical areas. Some of these areas cover such topics as: 1) Planetary surface structures on the Moon and Mars; 2) space resources and in situ materials utilization; 3) space energy; 4) space mining and excavation; 5) space automation and robotics; 6) life support systems; 7) lunar-based astronomy; and 8) space education. A special session was devoted to graduate student papers.
Due to the availability of large digital computers and advances in computational analysis techniq... more Due to the availability of large digital computers and advances in computational analysis techniques, it has become feasible to perform stress analyses of geotechnical structures involving complex geometries and material behavior. A key element in such analyses is the proper modeling of the constitutive behavior of soils. Intensive research in recent years has led to a proliferation of constitutive models which have been postulated to represent soil behavior under general loading conditions. In this paper some of these models are reviewed regarding their basic assumptions and the requirement of input data for their characterization. A classification of constitutive models is given on the basis of basic approaches to relating stress and strain. Representative models from each class are selected for detailed examination, with the hyperbolic model, the elastic-perfectly plastic model, the Cam-Clay model, the cap model. Lade's model, Prevost's model, and the endochronic model being selected. Finally, a comparison is made of these models regarding their range of applicability.
Journal of Computing in Civil Engineering, Apr 1, 1999
Digital imaging analysis was used to study localized deformations in granular materials tested un... more Digital imaging analysis was used to study localized deformations in granular materials tested under plane strain condition. Two independent techniques were applied and compared. In the first technique, the digitized optical images of a grid printed on the latex membrane were ...
Flexible Boundary for Discrete Element Simulation of Granular Assemblies. M Borsboom, J Groeneweg... more Flexible Boundary for Discrete Element Simulation of Granular Assemblies. M Borsboom, J Groeneweg, N Doorn, M van Gent Engineering Mechanics( 1996), 884-893. 63 Mathematics and Computation(CE).
This proceedings, Engineering, Construction and Operations in Space III, consists of over 200 pap... more This proceedings, Engineering, Construction and Operations in Space III, consists of over 200 papers presented at Space '92, the Third International Conference on Engineering, Construction and Operations in Space held in Denver, Colorado on May 31-June 4, 1992. The papers focus on 18 diversified technical areas. Some of these areas cover such topics as: 1) Planetary surface structures on the Moon and Mars; 2) space resources and in situ materials utilization; 3) space energy; 4) space mining and excavation; 5) space automation and robotics; 6) life support systems; 7) lunar-based astronomy; and 8) space education. A special session was devoted to graduate student papers.
Test results are presented showing the post-peak response of concretes of three different strengt... more Test results are presented showing the post-peak response of concretes of three different strengths under triaxial stress states. These test results clearly show the transition from brittle to ductile behavior under increasing confinement, the residual strength, and the strain behavior at ...
A servo-controlled multiaxial cubical test apparatus has recently been used to investigate the be... more A servo-controlled multiaxial cubical test apparatus has recently been used to investigate the behavior of the foundation soil for a gravity structure in Norton Sound of the Alaska Outer Continental Shelf. The undrained stress-strain, strength, and pore water pressure responses were measured during cyclic loading events that simulated conditions existing under the platform when subjected to realistic storm wave loading.
Journal of Engineering Mechanics-asce, Oct 1, 2002
As I pass the Editorship to my successor, I am very pleased to report that the Journal of Enginee... more As I pass the Editorship to my successor, I am very pleased to report that the Journal of Engineering Mechanics maintains its position among the leading society-based, archival journals in the broad field of applied mechanics, in particular the field of mechanics that has its base in civil engineering. The journal remains among the largest ASCE journals in terms of the number of papers published, as well as being among the most visible and productive mechanics journals based on readership, impact, and citations. The number of manuscripts submitted has continuously grown over the years, and in 2001 the number was 344. The total number of papers published during the 12 months ending in May, 2002, was 156. Nearly one-half of the papers published come from overseas, which is a particular testimony to the international nature of the journal and mechanics in general. The journal receives a constant stream of high quality papers, and we expect this trend to continue. During the past 5 years, we have devoted on the average two issues each year to special topics to stimulate readership and authorship in related fields of mechanics with the expectation to grow the journal in these areas. While the performance indicators and statistics for the journal are generally very favorable, the Editorial Board members and I are concerned that a large number of reviews are long overdue, which does not reflect well on the journal and often frustrates talented authors, who may publish their papers elsewhere. It is very important that our authors know that the journal will process their papers quickly and fairly, and at the same time provide meaningful reviews. Another area of grave concern is the increasing number of cases involving multiple paper submissions and publications, which both violate the integrity of the journal and copyright agreements. In recent cases, the journal has barred offending authors from publishing for a period of 10 years. Clearly, the journal is deeply concerned about these developments and is making major efforts to address the issues. This year marks ASCE’s 150th anniversary, and the journal is joining the celebration by publishing three invited papers by outstanding scholars in the field of mechanics in separate issues this fall. The subjects range from past achievements, state-of-the-art reviews, and future trends. As Editor, it has been my very good fortune to witness firsthand many new exciting developments in mechanics, both in terms of theory and experiments. This has been one of the most rewarding and exciting tasks I have had, and I thank you so much for the opportunity to serve the broad mechanics community. As I bid you farewell, please join me in welcoming the new Editor, Professor Mircea Grigoriu from Cornell University, who officially takes over on October 1, 2002.
This proceedings, Engineering, Construction and Operations in Space III, consists of over 200 pap... more This proceedings, Engineering, Construction and Operations in Space III, consists of over 200 papers presented at Space '92, the Third International Conference on Engineering, Construction and Operations in Space held in Denver, Colorado on May 31-June 4, 1992. The papers focus on 18 diversified technical areas. Some of these areas cover such topics as: 1) Planetary surface structures on the Moon and Mars; 2) space resources and in situ materials utilization; 3) space energy; 4) space mining and excavation; 5) space automation and robotics; 6) life support systems; 7) lunar-based astronomy; and 8) space education. A special session was devoted to graduate student papers.
Due to the availability of large digital computers and advances in computational analysis techniq... more Due to the availability of large digital computers and advances in computational analysis techniques, it has become feasible to perform stress analyses of geotechnical structures involving complex geometries and material behavior. A key element in such analyses is the proper modeling of the constitutive behavior of soils. Intensive research in recent years has led to a proliferation of constitutive models which have been postulated to represent soil behavior under general loading conditions. In this paper some of these models are reviewed regarding their basic assumptions and the requirement of input data for their characterization. A classification of constitutive models is given on the basis of basic approaches to relating stress and strain. Representative models from each class are selected for detailed examination, with the hyperbolic model, the elastic-perfectly plastic model, the Cam-Clay model, the cap model. Lade's model, Prevost's model, and the endochronic model being selected. Finally, a comparison is made of these models regarding their range of applicability.
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