professor ben schafer's thin-walled structures research group - johns hopkins university

 

Ben Schafer

Swirnow Family Scholar

Professor and Chair

Dept. of Civil Engineering

Johns Hopkins University

208 Latrobe Hall

Baltimore, MD 21218

410.516.6265

email: schafer@jhu.edu

info: curriculum vitae

 

 


Research Work in the Thin-walled Structures Group

 

 Analysis

   CUFSM - Free finite strip software for elastic buckling

   CUTWP - Free software for classic global buckling

   Finite strip method research page

   The constrained finite strip method (cFSM)

   Generalized Beam Theory (Camotim et al.)

   In-house modeling support tools  

 

 Cold-formed steel

   CFS-NEES Earthquake Engineering Research

   USAID, US-Egypt CFS Midrise Housing

   Direct Strength Method

   Direct Strength Method - Beam Columns

   Modeling cold-formed steel

   Optimization of thin-walled sections

   NSF: Imperfections and Analysis-Based Design

   Completed Projects

   Sheathing Braced Design of Wall Studs

   Direct Strength Method for members with holes

   Inelastic bending of CFS members

   Local buckling of C's and Z's in bending

   Distortional buckling of C's and Z's in bending

   Distortional buckling of columns

   Rotational restraint of sheathing

   Committees and Codes

   ASCE-SEI Committee on Cold-Formed Steel

   Eurocode and cold-formed steel

 

 Hot-rolled steel

   Reliability

   Advanced analysis of steel structures 

   Design for unforeseen catastrophic events 

   Stability

   Cross-section stability of structural steel

 

 Other Materials and Structures Work

   Metallic Foam

   Steel foam for structural applications

   Timber

   Covered Wooden Bridges

   Plastic

  Thin-walled thermoplastic pipe

 

= under significant construction


 Education - course web sites

   What is Engineering? 

   Perspectives on Structures

   Solid Mechanics and Theory of Structures

   Steel Structures

   Structural Stability

   Structural Dynamics

   Structural Reliability


People

Professor Ben Schafer (email)

Alumni

° Go here for full list

Current Members

Postdoctoral Research Scholars

Dr. Shahab Torabian

Visiting Scholars)

° Dr. Lingfeng Yin (China)

 Graduate Students

° Jiazhen Leng, PhD Candidate

° Kara Peterman, PhD Candidate

° Jean Batista, PhD Candidate

° Xi Zhao, PhD Candidate

° Dave Fratamico, PhD Candidate

° Hung Ngo, MS Candidate

° Guanbo Bian, MS Candidate

Visiting Student Scholars

° Zheng Baofeng (China)

° Ying Qin (China)

° Roberto Comini (DTU)

 Undergraduate Researchers

Please contact Dr. S if interested

High School Researchers

Brooks Gearhart (Baltimore Poly)

 


 Bio-corner: Bio and Thin-walled Structures

    Thin-walled structures often occur in biological applications, from the meso-scale of bone structure down to the nano-scale of cell cytoskeleton networks. The large range of active research at Johns Hokpins in "nano" and particularly "bio" applications affords a variety of interesting collaborations. See Professor Schafer's vitae for research on the stability of bones and cytoskeleton networks. Learn more about bio related institutes that Professor Schafer is affiliated:

  INBT: Institute for Nano Bio Technology

  IMMBI: Inst. for Multiscale Modeling in Biological Interactions

  For students interested in working in these cross-disciplinary areas Professor Schafer is affiliated with NBMed, the Howard Hughes Medical Institute Graduate Training Program at Hopkins. Current Hopkins students as well as prospective students may apply. Students should have significant strength and interest in computational modeling.

 

What are Thin-Walled Structures?


Scopus RSS Feed of Recent Papers



News from the Group


Direct Strength Beam-Columns Year 2

(October 2013)

    Our research on a novel method for designing cold-formed steel beam columns when loaded with axial loads and bending simultaneously has reached an important milestone with the issuing of the year 2 report. This report, among other items, details a series of careful tests that truly explore the force-moment space of a cold-formed steel beam-column. Go here for all of the materials on the project.

 

Full-scale CFS-NEES Testing Underway(Summer 2013)

    The final experimental phase of our cold-formed steel earthquake engineering project: CFS-NEES is underway at the SEESL lab in Buffalo. Read graduate student Kara Peterman's blog for the latest updates, or check in on the live feed at the facility. We hosted the American Iron and Steel Institute Committees in July. Testing is ongoing, so far we are learning a great deal about how cold-formed steel buildings perform as a system.

 

Sheathing Braced Wall Design Report

(February 2013)

    Our extensive research on sheathing-braced cold-formed steel walls has recenrly wrapped up. All of the project information is available here, or jump directly to the final report. Complete design examples are provided for the design of CFS walls that employ sheathing to successfully brace the studs.

CFS-NEES Reports Posted

(January 2013)

    Our cold-formed steel earthquake engineering research project has been busy. New research reports detailing the CFS-NEES archetype building, shear wall testing, moment-rotation behvaior of beams, and fastener-sheathing testing as well as other recent research progress are all available. Go here to learn more about the project and here to jump directly to all the great publications.

US-Egypt CFS Workshop Success

(December 2012)

    Egypt is in political turmoil. Making a difference in these times is probably asking too much from a small joint USAID/NSF research project, but for two days (9-10 December) approximately 200 Egyptian engineers, architects, builders, and manufacturers and even a few ministers from the Egyptian government met at the University of Cairo to imagine a future for Egypt that takes advantage of the latest technology: light (cold-formed) steel framing. The workshop was led by the United States and Egyptian project teams and included key participation from the United States Industrial Advisory Board. Four members of that board: George Richards (BORM), Don Allen (DSi), Nader ElHajj (Framecad), and Nabil Rahman (TSN), came to Cairo to share their experiences. Learn more.

 

Coupled Instabilities 2016

(December 2013)

    The Thin-walled Structures Group has agreed to host the Coupled Instabilities in Metal Structures conference series in 2016. More details forthcoming.

CUFSM 4.05 Updated

(Summer 2012)

    We have updated the new standalone version of CUFSM (version 4.05) now available online for free download. CUFSM 4.05 provides a sweeping expansion to the capabilities of our popular finite strip program - now the local, distortional, and global buckling loads of thin-walled members can be explored for general end boundary conditions. This expansion allows for much more difficult problems to be explored providing new insights for researchers and engineers. For more on CUFSM 4 go here, for more on FSM research go here.

Advances in Cold-Formed Steel

(October 2011)

ECCS Steel Construction Review Article First Page

We have recently completed a review article for ECCS Steel Construction that provides a summary of recent advances in the application, analysis, and design of cold-formed steel. This one article brings the engineer or researcher up to speed on the latest in cold-formed steel structures. Take a peek here.

   

CUFSM 4 Standalone Released

(October 2011)

    We have released the new standalone version of CUFSM (version 4.04) now available online for free download. CUFSM 4.04 provides a sweeping expansion to the capabilities of our popular finite strip program - now the local, distortional, and global buckling loads of thin-walled members can be explored for general end boundary conditions. This expansion allows for much more difficult problems to be explored providing new insights for researchers and engineers. For more on CUFSM 4 go here, for more on FSM research go here.

 

<past news stories>

 

Other Links of Interest 

American Iron and Steel Institute

Cold-Formed Steel Engineers Institute

Center for Cold-Formed Steel Structures (UMR)

Virginia Tech (Cris Moen) Research Group

University of Sydney Research Group

McGill University Research Group

University of Waterloo Research Group

 

 

last updated 4.Feb.2013 - Ben Schafer, schafer@jhu.edu 

since 19 Oct. 2006

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