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Important News: ICEFA V changes venue from Rotterdam to The Hague

Submitted by Laure Ballu on
ICEFA V, the Fifth International Conference on Engineering Failure Analysis, will now be held at Hilton Hotel, The Hague, The Netherlands from 1-4 July 2012. For more information, go to www.icefaconference.com

REFERENCE POINT of analytical rigid surface, specialist in ABAQUS CAE Explicit contact, please help

Submitted by ABAqirl on

Hello everybody,

I simulate the indentation test with ABAQUS CAE, the indenter is simulated as rigid body analytical surface. I also created reference point, but when i submit the job, there is a mistake:

 

The rigid part instance Part-2-1 is missing a reference point. Either assign a reference point to the corresponding part or include the entire part in a rigid body constraint.

I think i have done everything properly but it doesn't work. if you need i can send you my code.

I am looking forward to your answer.

 

Comments on Cauchy's stress theorem

Submitted by Structrual Engineer on

I have been bugged by this question ever since I studied cauchy's stress theory 10 years ago.

In cauchy's analysis of solids, there two popular geometries.

First one is a unit cube used for deriving equations of equilibrium.

And the second one is a tetraheadon used for deriving Cauchy's stress theorem.

In both the cases limit of force equilibrium as solid geometry shrinks to a point is derived.

My question has been, how come limit of force equilibrium at a point inside a solid depenent on the path taken by limiting process.

Job Opening at IBM Microelectronics: Semiconductor Process Integration Engineering Professinal

Submitted by Xiao Hu Liu on

There are several openings for semiconductor process integration at IBM Microelectronics. The reqiured background is quite broad, specifically mechanical engineering background, reliability, failure analysis and modeling with experience in BEOL process and integration. To see more details and to apply online, please click the link below.

https://jobs3.netmedia1.com/cp/job_summary.jsp?job_id=STG-0424220

 

Pre-filled Syringe Failure Analysis using Abaqus/Standard

Submitted by SIMULIA on

Failure of pharmaceutical packaging incurs the risk of negative health outcomes and expensive product recalls. Pre-filled syringes represent a growing portion of the drug packaging market. During its working life, a syringe ex-periences stresses that may result in material damage. Specifically, the syringe barrel may develop microcracks that coalesce and propagate, causing the syringe to frac-ture and its contents to lose sterility. Abaqus/Standard offers the technologies necessary to include fracture and failure in the syringe design process.

Optimization in the Vibro-Acoustic Design of Hearing Instruments

Submitted by SIMULIA on

In the design of hearing instruments it is important to achieve the highest possible gain without introducing feedback between the microphone and loudspeaker. With more gain, a larger hearing loss can be accommodated and a greater number of users benefit.

Maximizing gain while minimizing the possibility of feed-back requires an optimal choice of design parameters. In this Technology Brief, we outline how Abaqus/Standard and Isight can be combined in a process to optimize the vibro-acoustic characteristics of hearing instruments.

Modeling Biodegradable Polymeric Stents Using Abaqus/Standard

Submitted by SIMULIA on

Biodegradable polymeric stents must provide mechanical support of the stenotic artery wall for up to several months while being subjected to cyclic loading that af-fects the degradation process. To understand the appli-cability and efficacy of biodegradable polymers, a hypere-lastic constitutive model is developed for materials under-going deformation-induced degradation. The model was implemented in Abaqus/Standard and applied to a com-monly used biodegradable polymer system, poly (L-lactic acid) (PLLA).