𝔖 Bobbio Scriptorium
✦   LIBER   ✦

28-noded hexahedral isoparametric element for analysis of contact problems

✍ Scribed by Buczkowski, Ryszard ;Gabbert, Ulrich

Publisher
John Wiley and Sons
Year
2004
Tongue
English
Weight
141 KB
Volume
20
Category
Article
ISSN
1069-8299

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The previously introduced 21‐node three‐dimensional solid element (Commun. Numer. Meth. Engng 1998; 14: 681–692) fulfills the physical contact requirements properly. In dynamic explicit impact problems, however, due to non‐positive nodal masses on the contact face the 21‐node element must be used with care. To overcome this problem, a 28‐node transient element as a certain case of a degenerated 20‐node standard hexahedral element of the serendipity family is investigated. Construction of the shape functions of the transition element is described. This element is established by putting 16 nodes on the top or bottom face of the basic 20‐node solid element for an effective connection between contact region (28‐node elements) and rest of the structure (20‐node elements). Comparisons with results calculated for the 3D‐contact problem using the combination of the 21‐node and 20‐node elements prove high accuracy and overall superiority of the present method. Two numerical examples are selected to demonstrate applicability of the new element proposed. Copyright © 2004 John Wiley & Sons, Ltd.

📜 SIMILAR VOLUMES

21-node hexahedral isoparametric element
21-node hexahedral isoparametric element for analysis of contact problems
✍ Buczkowski, Ryszard 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 187 KB

Because the 20-node solid element of the serendipity family does not ful®l the physical contact requirements properly (the equivalent nodal forces include negative values) a 21-node three-dimensional transient element for the non-linear contact/friction problem is investigated. Construction of the s

Cognitive task analysis for rare acciden
Cognitive task analysis for rare accident problems and for diverse circumstances. The example of train drivers (Elements pour l'Analyse de l'Activite Cognitive dans une Problematique d'Accidents Rares et aux Circonstances Diverses. L'Example des Conducteurs de Train). (in French) : Lamonde, F. In: Proc 23rd Ann Conf of the Human Factors Assoc of Canada, Ottawa, Ontario, 26–28 Sep 1990. The Association, Mississauga, Ontario, 1990, pp 63–67, 6 refs
📂 Article 📅 1992 🏛 Elsevier Science 🌐 English ⚖ 276 KB

Enhanced 9-1-1 emergency communications system. Designing a user interface for emergency communications requires a thorough understanding of the circumstances in which PSAP attendants operate. Researching the work environment of PSAP attendants has served to identify several human factors issues tha