Algoritmo de integración para materiales no lineales considerando los efectos de viscoplasticidad, endurecimiento cinemático no lineal y daño

Gómez-Cataño, J. D. (Juan David) | 2014-05-07

In the Finite Element Method (FEM) material non-linearities are considered through incremental formulations in terms of a pseudo-time variable for the case of rate independent models and a real time variable in the case of rate-dependent models. The incremental statement of the problem implies that the constitutive models need to be time-integrated at the local level. In this article we discuss a standard algorithm available in the literature where additionally we have incorporated the effects of non-linear kinematic hardening, viscoplasticity, and damage. The algorithm is incorporated into a FEM code. In order to verify the correctness of our implementation we have particularized the model to the case of a creep law available from literature for solder alloys. Numerical simulation results are compared with experiments taken from the literature.

Guía de laboratorio 1: Identificación de esfuerzos

Escuela de Ingeniería de Antioquia EIA | 2013-09-30

Identify the different types of stresses induced to structural elements such as axial stress, shear stress and contact stress.

Lección de Mecánica de Materiales # 11

Montoya-Goéz, Y. J.(Yesid de Jesús) | 2014-07-27

Lección de Mecánica de Materiales # 11-a

Montoya-Goéz, Y. J.(Yesid de Jesús) | 2014-07-27

Lección de Mecánica de Materiales # 11-b

Montoya-Goéz, Y. J.(Yesid de Jesús) | 2014-07-27

Lección de Mecánica de Materiales # 11-c

Montoya-Goéz, Y. J.(Yesid de Jesús) | 2014-07-27

Lección de Mecánica de Materiales # 6

Montoya-Goéz, Y. J.(Yesid de Jesús) | 2014-07-27

Lección de Mecánica de Materiales # 6-a

Montoya-Goéz, Y. J.(Yesid de Jesús) | 2014-07-27

Lección de Mecánica de Materiales # 6-b

Montoya-Goéz, Y. J.(Yesid de Jesús) | 2014-07-27

Lección de Mecánica de Materiales # 7

Montoya-Goéz, Y. J.(Yesid de Jesús) | 2014-07-27

Lección de Mecánica de Materiales # 7-a

Montoya-Goéz, Y. J.(Yesid de Jesús) | 2014-07-27

Lección de Mecánica de Materiales # 8

Montoya-Goéz, Y. J.(Yesid de Jesús) | 2014-07-27

Lección de Mecánica de Materiales # 8-a

Montoya-Goéz, Y. J.(Yesid de Jesús) | 2014-07-27

Lección de Mecánica de Materiales # 8-b

Montoya-Goéz, Y. J.(Yesid de Jesús) | 2014-07-27

Lección de Mecánica de Materiales # 9

Montoya-Goéz, Y. J.(Yesid de Jesús) | 2014-07-27

Lección de Mecánica de Materiales # 9-a

Montoya-Goéz, Y. J.(Yesid de Jesús) | 2014-07-27

Lección de Mecánica de Materiales # 9-b

Montoya-Goéz, Y. J.(Yesid de Jesús) | 2014-07-27

Patologías, causas y soluciones del concreto arquitectónico en Medellín

Figueroa, T. (Tatiana) | 2014-05-12

This paper discusses the most important results of a research focused on the construction process of architectonical concrete, presenting as a final result a handbook with recommendations on how to build architectonical concrete elements in the city of Medellin (Colombia). Architectonical concrete is a construction material which is able to supply both structural stability and definitive finishing. The research started by the definition of existing defects as well as their measuring techniques and tolerances. A statistical study was made in order to determine the most common defects on concrete surfaces in Medellin city. Possible causes of the most common defects were determined and, as a result of the analysis of each cause, general and particular solutions were given. General solutions focused on materials, equipment and the building process whereas particular solutions were given to each defect. Finally, the results herein presented constitute an advance in developing a regional specification, which will allow for the standardization of the processes involved on architectonical concrete construction.