Science

Pan-American Congress on Applied Mechanics

(PACAM)

Gerardo Diaz

University of Chile

P.O.Box 1420, Santiago, Chile

Charles Steele

Stanford University

Stanford, California, 94305, USA

The objective of PACAM is to bring together researchers, practicing engineers and students from South, Central, and North America. However, a significant number of participants have come from Asia, and Eastern and Western Europe. An unusual opportunity is provided for personal interaction between workers from different geographical areas and from different branches of mechanics. Papers on all the usual, as well as unusual, topics of mechanics are welcome. Both theoretical and design contributions are included.

The previous and planned PACAM's are: PACAM I Rio de Janeiro, BRAZIL, 1989; PACAM II, Valparaiso - CHILE, 1991; PACAM III São Paulo - BRAZIL, 1993; PACAM IV Buenos Aires - ARGENTINA, 1995; PACAM V San Juan - PUERTO RICO, 1997; PACAM VI Rio de Janeiro, BRAZIL, 1999; PACAM VII Temuco, CHILE, 2002.

PACAM VIII Havana, CUBA, 2004.

 

The idea for the Pan American Congress of Applied Mechanics originated with Professor Arthur Leissa about 15 years ago, when he was president of the American Academy of Mechanics (AAM). The general consensus was and is that there are more than enough technical meetings. AAM is actually forbidden in its constitution from organizing meetings in the US. Professor Leissa noticed that AAM is not restricted from organizing a meeting in Latin America. Despite the number of students in mechanics attending northern universities and the importance of mechanics in the economic development in the southern lands, the technical interaction is less than it should be. For comparison, consider the to-and-fro flow of mechanics workers between US and Western Europe and parts of Asia. Many of the workers in North America spent considerable time in Europe and Asia while being totally ignorant of the neighbors to the south. Professor Leissa saw the possibility of a positive step with PACAM.

Consequently, PACAM I was organized to be held in Rio de Janeiro. We were rather apprehensive about the response, but the attendance was about 200, as we had estimated. At that time, Brazil was suffering from run-away inflation, high crime rate, massive poverty, and in Rio a strike of city workers, meaning garbage was not collected. Despite all that, the PACAM participants were enchanted with the city, the people, the beaches, and the hotel breakfasts. Professor Marcelo Crespo da Silva working with Tourlite spoiled us with the arrangements for low-cost travel and accommodations, with extra tours and a feast added. One has not experienced the pleasure of life without seeing Rio from Corcovado, attending a samba show and spending New Year's Eve on Copacabana Beach. At this time, Latin America is in much better condition, although massive problems remain. Who knows? If there had been more cultural exchange, rather than raw business interest, for the past 100 years, the US policy toward its southern neighbours may not have been so short-sighted. It has certainly been a surprise for many of us, to experience at the PACAM's the beauty, elegance, and hustle of these Latin American centers.

From the technical aspect, a somewhat different cross section of the technical community is present than at the usual meetings. Actually, the main disappointment with the first PACAM's was  a low Latin American participation. Travel is difficult for many in South America. Furthermore the tour package has sometimes made accommodations less expensive for those from the north then elsewhere. The balance was better in San Juan, where travel assistance was available for attendees from Latin America. For PACAM VI, the meeting was held jointly with the Brazilian Conference on Dynamics, normally held later in spring. So there were 330 participants with half from Latin America. PACAM VII had a low attendance, around 80, probably because of the general decrease in travel after 11 September 2001, and because North Americans have not heard as much about the attractions of the Lake District of Chile. However, it was a very positive meeting, with excellent arrangements by Professor Diaz and Professor Inostroza. To show the truly international character, attendees at PACAM VII were from Argentina, Austria, Brazil, Canada, Chile, Cuba, England, France, Germany, Greece, India, Iran, Italy, Jamaica, Japan, Mexico, Poland, Portugal, Russia, Singapore, Switzerland, Ukraine, United States, and Venezuela.

PACAM VIII will be held in Havana, Cuba, thanks to the invitation from Professor Reinaldo Rodriguez. Relations between the US and Cuba have not been warm. However, the cold war is over. Let us move forward and work for the common good.

 

Typical PACAM Sessions are on the topics: Applications in Dynamics and Acoustics; Biomechanics; Boundary Elements; Composite Materials; Control; Control Applications; Fluid Mechanics; Fracture Mechanics; Identification, Cracks and Damage; Mechanics of New Materials; Mechatronics; Monitoring and Diagnostics; Multi Body Contacts & Mechanics History; Non Linear Dynamics; Non Linearities in Mechanics; Numerical Methods; Optimization in Mechanics; Plates and Shells; Solid Mechanics; Structure Dynamics; Structural Mechanics; Stability, Bifurcation and Chaos; Thermal Sciences; Vibrations;

 

Publications.

1. Proceedings: A proceedings volume is prepared in time for the meeting. This contains a four-page summary of each paper scheduled for presentation and is given to each participant at the meeting.

2. Mechanics Pan America: In addition, the Advisory Board and Session Chairpersons have the duty to designate as outstanding contributions about 40 papers from those presented at the meeting. Each of the selected authors is invited to prepare an extended version of the paper. The Editorial Committee sends these through a peer review process for consideration for archival publication. The papers found acceptable appear in Mechanics Pan America, which was a special issue of Applied Mechanics Reviews through PACAM V. Since these papers are research contributions and not review papers, it was preferable to make the change to a research journal for the publication of Mechanics Pan America. Therefore contributions from PACAM VI are in the International Journal of Solids and Structures (IJSS), and PACAM VII is in progress for IJSS. Despite the title, IJSS normally contains papers on fluid-solid interactions and aspects of biomechanics, dynamics and optimization. Consequently, papers on all topics at PACAM are welcome for the special issue Mechanics Pan America.

The Seventh Pan American Congress of Applied Mechanics, PACAM VII was held from the 2nd to the 4th of January 2002, at the city of Temuco, Chile. The proceedings of the Congress included 167 papers written by some 400 authors, no only from the Americas but from other regions of the World as well, thus conferring to the event an international character. The Congress had an attendance of about 90 participants and 65 papers were presented to their consideration.

A total of 14 topics covering different areas of the Mechanics were covered; i.e. Beams and Frames; Biomechanics; Composite Materials; Contact Problems; Control; Dynamics; Elasticity, Plasticity and Viscoelasticity; Fluid Mechanics; Fracture and Fracture Mechanics; Numerical Methods; Optimization in Mechanics, Design and Energy; Solid Mechanics, Thermal Sciences; and Vibration and Acoustic.

The wide range of topics discussed in the Congress included those that could be considered as classics of Mechanics. But also included topics in which intermingle in one hand the frontiers of Mechanics and the Engineering of Materials, and on the other hand, the frontiers of Mechanics and other branches of engineering.

The methodological tools used for the analysis and solution of problems have experienced a growing evolution, with the interaction of simulation, numerical methods and mathematical analysis, all of them backed by computational technology.

The topics were approached not only from an applied point of view, but also with a theoretical perspective, leading to an explanation of the behavior of mechanical systems subject to the demand put forward by problems of applied nature.

In general, the progress of science seeks for the attainment of better living conditions by human beings. Indeed mechanics is not an exception and is continuously working toward and searching for such end. A good number of the studies that were presented in the Congress are already contributing to the achievement of a better quality of life, and many others are on their way to do so.

Finally, the interchange of knowledge, experiences, and ways and methods of work have been again, one of the objectives best achieved in this last version of PACAM.

All interested potential Participants, please, visit AAM web page: http://www.aamech.org/. Inquires may also be directed to the Co-Chairmen:

Prof. Martin Ostoja-Starzewski; Prof. Reinaldo Rodriguez.

e-mail: martin.ostoja@mcgill.ca

            rrora@pumas.iingen.unam.mx

 

Gerardo Diaz, Professor; University of Chile;

PACAM-VII Vice-Chairman.

Charles R.Steele, Professor; Stanford University;

Chairman, PACAM Advisory Committee.



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