Refine
Year of publication
- 2024 (67)
- 2023 (94)
- 2022 (136)
- 2021 (136)
- 2020 (169)
- 2019 (196)
- 2018 (169)
- 2017 (154)
- 2016 (157)
- 2015 (162)
- 2014 (161)
- 2013 (171)
- 2012 (162)
- 2011 (183)
- 2010 (181)
- 2009 (179)
- 2008 (150)
- 2007 (137)
- 2006 (129)
- 2005 (122)
- 2004 (150)
- 2003 (95)
- 2002 (123)
- 2001 (103)
- 2000 (102)
- 1999 (109)
- 1998 (98)
- 1997 (96)
- 1996 (81)
- 1995 (78)
- 1994 (87)
- 1993 (59)
- 1992 (54)
- 1991 (29)
- 1990 (39)
- 1989 (44)
- 1988 (56)
- 1987 (32)
- 1986 (19)
- 1985 (33)
- 1984 (22)
- 1983 (20)
- 1982 (29)
- 1981 (20)
- 1980 (36)
- 1979 (24)
- 1978 (34)
- 1977 (14)
- 1976 (13)
- 1975 (12)
- 1974 (3)
- 1973 (2)
- 1972 (2)
- 1971 (1)
- 1968 (1)
Institute
- Fachbereich Medizintechnik und Technomathematik (1575)
- Fachbereich Elektrotechnik und Informationstechnik (715)
- IfB - Institut für Bioengineering (567)
- Fachbereich Energietechnik (563)
- Fachbereich Chemie und Biotechnologie (541)
- INB - Institut für Nano- und Biotechnologien (533)
- Fachbereich Luft- und Raumfahrttechnik (484)
- Fachbereich Maschinenbau und Mechatronik (272)
- Fachbereich Wirtschaftswissenschaften (209)
- Solar-Institut Jülich (161)
Has Fulltext
- no (4735) (remove)
Language
- English (4735) (remove)
Document Type
- Article (3194)
- Conference Proceeding (1065)
- Part of a Book (197)
- Book (146)
- Conference: Meeting Abstract (34)
- Doctoral Thesis (32)
- Patent (25)
- Other (10)
- Report (10)
- Conference Poster (5)
Keywords
- Gamification (6)
- avalanche (6)
- Additive manufacturing (5)
- Earthquake (5)
- Enterprise Architecture (5)
- Industry 4.0 (5)
- MINLP (5)
- Natural language processing (5)
- solar sail (5)
- Additive Manufacturing (4)
A concept for the analysis and optimal design of reinforced concrete structures is described. It is based on a nonlinear optimization algorithm and a finite element program for linear and nonlinear analysis of structures. With the aim of minimal cost design a two stage optimization using efficient gradient algorithm is developed. The optimization problems on global (structural) and local (crosssectional) level are formulated. A parallelization concept for solving the two stage optimization problem in minimal time is presented. Examples are included to illustrate the practical use and the effectively of the parallelization in the area of engineering design.
Silos generally work as storage structures between supply and demand for various goods, and their structural safety has long been of interest to the civil engineering profession. This is especially true for dynamically loaded silos, e.g., in case of seismic excitation. Particularly thin-walled cylindrical silos are highly vulnerable to seismic induced pressures, which can cause critical buckling phenomena of the silo shell. The analysis of silos can be carried out in two different ways. In the first, the seismic loading is modeled through statically equivalent loads acting on the shell. Alternatively, a time history analysis might be carried out, in which nonlinear phenomena due to the filling as well as the interaction between the shell and the granular material are taken into account. The paper presents a comparison of these approaches. The model used for the nonlinear time history analysis considers the granular material by means of the intergranular strain approach for hypoplasticity theory. The interaction effects between the granular material and the shell is represented by contact elements. Additionally, soil–structure interaction effects are taken into account.
Past earthquakes demonstrated the high vulnerability of industrial facilities equipped with complex process technologies leading to serious damage of the process equipment and multiple and simultaneous release of hazardous substances in industrial facilities. Nevertheless, the design of industrial plants is inadequately described in recent codes and guidelines, as they do not consider the dynamic interaction between the structure and the installations and thus the effect of seismic response of the installations on the response of the structure and vice versa. The current code-based approach for the seismic design of industrial facilities is considered not enough for ensure proper safety conditions against exceptional event entailing loss of content and related consequences. Accordingly, SPIF project (Seismic Performance of Multi- Component Systems in Special Risk Industrial Facilities) was proposed within the framework of the European H2020 - SERA funding scheme (Seismology and Earthquake Engineering Research Infrastructure Alliance for Europe). The objective of the SPIF project is the investigation of the seismic behavior of a representative industrial structure equipped with complex process technology by means of shaking table tests. The test structure is a three-story moment resisting steel frame with vertical and horizontal vessels and cabinets, arranged on the three levels and connected by pipes. The dynamic behavior of the test structure and installations is investigated with and without base isolation. Furthermore, both firmly anchored and isolated components are taken into account to compare their dynamic behavior and interactions with each other. Artificial and synthetic ground motions are applied to study the seismic response at different PGA levels. After each test, dynamic identification measurements are carried out to characterize the system condition. The contribution presents the numerical simulations to calibrate the tests on the prototype, the experimental setup of the investigated structure and installations, selected measurement data and finally describes preliminary experimental results.