161,410 research outputs found
Navarro Hotel, Corsicana, Texas [No. 2]
No full textImage of the exterior of the Navarro Hotel in Corsicana, Texas.Date derived from postcards from E. C. Kropp Co. with the same back and stamp box details. Recto: [imprinted on item] Navarro Hotel, Corsicana, Texas - 1. Verso: [imprinted on item] Made in U. S. A. by E. C. Kropp Co., Milwaukee, Wis. 31447 N
Union Depot, Elgin, Texas.
No full textRecto: [imprinted] Union Depot, Elgin, Texas. Verso: [imprinted] E. C. Kropp Co., Milwaukee
Carlisle Military Academy, After Fighting Fire, March 10, 1909, Arlington, Tex.
No full textRecto: [imprinted] Carlisle Military Academy, After Fighting Fire, March 10, 1909, Arlington, Tex. E. C. Kropp CO. Pub. Milwaukee, No 6182
First Interurban between Waxahachie and Dallas.
No full textDate obtained from historical account of Electric Interurban Railways in Texas. Source: https://tshaonline.org/handbook/online/articles/eqe12 Recto: [imprinted] First Interurban between Waxahachie and Dallas. Verso: [imprinted] E. C. Kropp Co., Milwaukee
Santa Fe New North Yards Temple, Texas.
No full textDate derived from physical characteristics of postcard. Recto: [imprinted] Santa Fe New North Yards Temple, Texas. E.C. Kropp Co. Pub. Milwaukee, No. 422
Melrose Court, Dallas, Texas
No full textDate obtained from advertisement using same imprint. Source: https://flashbackdallas.com/2015/03/21/more-random-buildings-still-standing/ Recto: [imprinted] Melrose Court, Dallas, Texas.-8. Verso: [imprinted] E. C. Kropp Co., Milwaukee. 29592N
Harvey House and Santa Fe Depot, Temple, Tex.
No full textDate refers to postmark. Recto: [imprinted] Harvey House and Santa Fe Depot, Temple, Tex. E.C. Kropp Co. Milwaukee [handwritten note not transcribed]. Verso: [postmarked] Temple, Tex., Sep. 27, 3- PM, 1907. [handwritten note and address not transcribed]
[International & Great Northern Railroad Depot, Laredo, Texas]
No full textDate refers to postmark. Recto: [imprinted] I. & G. N. Depot, Laredo, Tex. Verso: [imprinted] 19816-N. E. C. Kropp Co., Milwaukee. [postmarked] Laredo, Tex. Feb. 6, 9 PM, 1921. [handwritten note and address not transcribed]
'Where the Business is Done,'' Orange, Tex.
No full textDate refers to postmark. Recto: [imprinted] ''Where The Business Is Done,'' Orange, Tex. E.C. Kropp Co. Milwaukee. [postmarked] Orange, Tex. Jan. 13, 2:30 PM, 1908. [handwritten note and address not transcribed]
Modelling of railway curve squeal including effects of wheel rotation
No full textRailway vehicles negotiating tight curves may emit an intense high-pitch noise. The underlying mechanisms of this squeal noise are still a subject of research. Simulation models are complex since they have to consider the non-linear, transient and high-frequency interaction between wheel and rail. Often simplified models are used for wheel and rail to reduce computational effort, which involves the risk of oversimplifications. This paper focuses on the importance to include a rotating wheel instead of a stationary wheel in the simulation models. Two formulations for a rotating wheel are implemented in a previously published wheel/rail interaction model: a realistic model based on an Eulerian modal coordinate approach and a simplified model based on a rotating load and moving Green's functions. The simulation results for different friction coefficients and values of lateral creepage are compared with results obtained for the stationary wheel. Both approaches for the rotating wheel give almost identical results for the rolling speed considered. Furthermore, it can be concluded that a model of a stationary flexible wheel is sufficient to simulate curve squeal
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