Contact

Dr. Benjamin W. Schafer (PI)

Professor

Dept. of Civil Engineering

Johns Hopkins University

Phone: (410) 516-6265

Email: schafer@jhu.edu

Publications

Journal Papers

Additional journal articles based on the CFS-NEES work are in production. Also not all additional articles from CFS-NEES collaborators are listed here.

Peterman, K.D., Stehman, M.J.J., Madsen, R.L., Buonopane, S.G., Nakata, N., Schafer, B.W. “Experimental seismic response of a full-scale cold-formed steel framed building: system-level response.” submitted to Journal of Structural Engineering (submitted 3 December 2015)

Peterman, K.D., Stehman, M.J.J., Madsen, R.L., Buonopane, S.G., Nakata, N., Schafer, B.W. “Experimental seismic response of a full-scale cold-formed steel framed building: sub-system level response.” submitted to Journal of Structural Engineering (submitted 3 December 2015)

Buonopane, S.G., Bian, G., Tun, T.H., Schafer, B.W. (2015). “Computationally Efficient Fastener-Based Models of Cold-Formed Steel Shear Walls with Wood Sheathing.” Journal of Constructional Steel Research 110 137-148 (DOI: 10.1016/j.jcsr.2015.03.008).

Ayhan, D., Schafer, B.W. (2015). “Cold-formed steel member bending stiffness prediction.” Journal of Constructional Steel Research 148-159 (DOI: 10.1016/j.jcsr.2015.07.004.)

Peterman, K. D., Nakata, N., Schafer, B.W. (2014). "Hysteretic Characterization of Cold-Formed Steel Stud-to-Sheathing Connections." Journal of Constructional Steel Research 101: 254-264. DOI: 10.1016/j.jcsr.2014.05.019

Liu, O., Peterman, K.D., Yu, C., Schafer, B.W. (2014). “Impact of construction details on OSB-sheathed cold-formed steel framed shear walls.” Journal of Constructional Steel Research. 101 (2014) 114-123 (DOI: 10.1016/j.jcsr.2014.05.003)

Dissertations

Peterman, K.D., (2014). Behavior of Full-Scale Cold-Formed Steel Buildings Under Seismic Excitations. Ph.D. Dissertation, Johns Hopkins University, Baltimore, Maryland May 2014 PDF from JHU library

Leng, J. (2015). Simulation of Cold-Formed Steel Structures. Ph.D. Dissertation, Johns Hopkins University, Baltimore, Maryland, August 2015 (Will be available here, once processed by the university)

CFS-NEES Research Reports and Data

C.A. Ganea, B.W. Schafer (2014). "Challenges with Analysis-Based Design for Light Steel Framing: Modeling the CFS-NEES Building in Commercial Structural Analysis Software." Research Report, CFS-NEES, RR05, (abandoned, in draft form only, email schafer@jhu.edu if interested in draft copy).

K.D. Peterman, B.W. Schafer (2013). "Hysteretic shear response of fasteners connecting sheathing to cold-formed steel studs" Research Report, CFS-NEES, RR04, January 2013, access at www.ce.jhu.edu/cfsnees

P. Liu, K.D. Peterman, B.W. Schafer (2012). "Test Report on Cold-Formed Steel Shear Walls" Research Report, CFS-NEES, RR03, June 2012, access at www.ce.jhu.edu/cfsnees

D. Ayhan and B.W. Schafer (2012). "Moment-Rotation Characterization of Cold-Formed Steel Beams" Research Report, CFS-NEES, RR02, April 2012, access at www.ce.jhu.edu/cfsnees.

R.L. Madsen, N. Nakata, B.W. Schafer (2011) "CFS-NEES Building Structural Design Narrative", Research Report, RR01, access at www.ce.jhu.edu/cfsness, October 2011, revised RR01b April 2012, revised RR01c May 2012 (Note, drawings of the CFS-NEES building are contained in RR01, in addition the latest drawings are provided here for Phase 1 final v21 June 2013, Phase 2 drawing: 2a, 2b,c,d,e)

NEES Data Sets (now housed at nees.org, moving to designsafe-ci.org in 2016)

Peng Liu, Kara Peterman, Benjamin Schafer (2014). Experimental Performance of Cold-Formed Steel Shear Walls under Cyclic Loading. Network for Earthquake Engineering Simulation (NEES)(distributor). Dataset. DOI: 10.4231/D38K74X6S

Kara Peterman, Benjamin Schafer (2014). Experimental Performance of Fastener-Stud-Sheathing Connections in Cold-Formed Steel Shear Walls. Network for Earthquake Engineering Simulation (NEES)(distributor). Dataset. DOI: 10.4231/D3K35MF32

Kara Peterman, Benjamin Schafer, Rob Madsen, Stephen Buonopane, Narutoshi Nakata (2014). Experimental Performance of Full-Scale Cold-Formed Steel Buildings Under Seismic Excitations. Network for Earthquake Engineering Simulation (NEES)(distributor). Dataset. DOI: 10.4231/D3DB7VR05

Conference Proceedings

Ayhan, D., Qin, Y., Torabian, S., Schafer, B.W. (2015). “Characterizing Joist-Ledger Performance for Cold-Formed Steel Light Frame Construction.” Proceedings of the Eighth International Conference on Advances in Steel Structures, Lisbon, Portugal 22-24 July. 15p.

Schafer, B.W. (2015). “Seismic Response and Engineering of Cold-Formed Steel Framed Buildings.” Proceedings of the Eight International Conference on Advances in Steel Structures, Lisbon, Portugal 22-24 July. 22p.

Peterman, K.D., Schafer, B.W., (2015). “Experimental Determination of Base Shear from Full-Scale Shake Table Testing of Two Cold-Formed Steel Framed Buildings.” Proc. of the 8th International Conference on Behavior of Steel Structures in Seismic Areas - STESSA 2015. Shanghai, China, July 1-4, 2015.

Bian, G., Padilla-Llano, D.A., Leng, J., Buonopane, S.G., Moen, C.D., Schafer, B.W., (2015). “OpenSees modeling of cold formed steel framed wall system”. Proc. of the 8th International Conference on Behavior of Steel Structures in Seismic Areas - STESSA 2015. Shanghai, China, July 1-4, 2015.

Peterman, K.D., Madsen, R., Schafer, B.W. (2014). “Experimental Seismic Behavior of the CFS-NEES Building: System-Level Performance of a Full-Scale Two-Story Light Steel Framed Building.” Proc. of the 22ndt Int’l. Spec. Conf. on Cold-Formed Steel Structures, 5-6 November 2014, St. Louis, MO, 887-902.

Bian, G., Buonopane, S.G., Ngo, H.H., Schafer, B.W. (2014). “Fastener-Base Computational Models with Application to Cold-Formed Steel Shear Walls.” Proc. of the 22ndt Int’l. Spec. Conf. on Cold-Formed Steel Structures, 5-6 November 2014, St. Louis, MO, 825-840.

Schafer, B.W., Ayhan, D., Leng, J., Liu, P., Padilla-Llano, D., Peterman, K.D., Stehman, M., Buonopane, S.G., Eatherton, M., Madsen, R., Manley, B., Moen, C.D., Nakata, N., Rogers, C., Yu, C. (2014). “The CFS-NEES Effort: Advancing Cold-Formed Steel Earthquake Engineering.” 10th U.S. National Conf. on Earthquake Engineering, Anchorage, Alaska. 11pp.

Buonopane, S.G., Burkhart, K., Puleo, J., Earley, T., Li, X., Schafer, B.W. (2014). “Educational Shake Table Models of CFS Shear Walls.” 10th U.S. National Conf. on Earthquake Engineering, Anchorage, Alaska. 11pp.

Buonopane, S.G., Tun, T.H., Schafer, B.W. (2014). “Fastener-Based Computational Models for Prediction of Seismic Behavior of CFS Shear Walls.” 10th U.S. National Conf. on Earthquake Engineering, Anchorage, Alaska. 11pp.

Peterman, K.D., Stehman, M.J.J., Buonopane, S.G., Nakata, N., Madsen, R.L., Schafer, B.W. (2014). “Seismic Performance of Full-Scale Cold-Formed Steel Buildings.” 10th U.S. National Conf. on Earthquake Engineering, Anchorage, Alaska. 11pp.

Peterman, K.D., Bian, G., Schafer, B.W. (2014). “Experimental and Computational Analysis of Direct Torsion in Cold-Formed Steel Lipped Channels.” Proceedings of the Annual Stability Conference - Structural Stability Research Council, Toronto, ON, March 25-28, 332-345.

Peterman, K.D., Stehman, M.J.J., Buonopane, S.G., Nakata, N., Madsen, R.L., Schafer, B.W. (2014). “Stability Behavior of Full-Scale Cold-Formed Steel Buildings Under Seismic Excitations.” Proceedings of the Annual Stability Conference - Structural Stability Research Council, Toronto, ON, March 25-28, 713-726.

Leng, J., Schafer, B.W., Buonopane, S.G. (2013). "Modeling the seismic response of cold-formed steel framed buildings: model development for the CFS-NEES building." Proceedings of the Annual Stability Conference - Structural Stability Research Council, St. Louis, Missouri, April 16-20, 2013, 17pp.

Leng, J., Schafer, B.W., Buonopane, S.G. (2012). “Seismic Computational Analysis of CFS-NEES Building.” Proc. of the 21st Int’l. Spec. Conf. on Cold-Formed Steel Structures, 24-25 October 2012, St. Louis, MO, 801-820.

Liu, P., Peterman, K.D., Yu, C., Schafer, B.W. (2012). “Characterization of cold-formed steel shear wall behavior under cyclic loading for the CFS-NEES building.” Proc. of the 21st Int’l. Spec. Conf. on Cold-Formed Steel Structures, 24-25 October 2012, St. Louis, MO, 703-722.

D. Ayhan, B.W. Schafer (2012) "Moment-Rotation Characterization of Cold-Formed Steel Beams Depending on Cross-Section Slenderness" 15th World Conference on Earthquake Engineering, September 24-28, Lisbon, Portugal.

K.D. Peterman, N. Nakata, B.W. Schafer (2012) "Cyclic Behavior of Cold-Formed Steel Stud-to-Sheathing Connections" 15th World Conference on Earthquake Engineering, September 24-28, Lisbon, Portugal.

P. Liu, K.D. Peterman, C. Yu, B.W. Schafer (2012) "Cold-formed steel shear walls in ledger-framed buildings", Annual Stability Conference, Structural Stabiltiy Research Council, April 2012, Grapevine, Texas.

D. Ayhan, B.W. Schafer (2012) "Characterization of moment-rotation response of cold-formed steel beams", Annual Stability Conference, Structural Stabiltiy Research Council, April 2012, Grapevine, Texas.

N. Nakata, B.W. Schafer, and R.L. Madsen (2012) "Seismic Design of Multi-Story Cold-Formed Steel Buildings: the CFS-NEES Archetype Building, 2012 Structures Congress, March 2012, Chicago, Illinois. 1507-1517.

D. Ayhan, B.W. Schafer (2012) "Impact of cross-section stability on cold-formed steel member stiffness and ductility", Annual Stability Conference, Structural Stabiltiy Research Council, May 10-14 2011, Pittsburgh, PA.

B.W. Schafer, N. Nakata, S.G. Buonopane, and R.L. Madsen (2011) "CFS-NEES: Advancing Cold-Formed Steel Earthquake Engineering, 2011 NSF CMMI Research and Innovation Conference, January 2011, Atlanta, Georgia.

Magazine Articles and Posters

Schafer, B.W. (2014). “The CFS-NEES Effort: Advancing CFS Earthquake Engineering.” STRUCTURE. March, 24-28.

CFS-NEES: Advancing Cold-Formed Steel Earthquake Engineering, 2011 NSF CMMI Research and Innovation Conference, January 2011, Atlanta, Georgia.