Moving The Force

The knowledge of the real forces acting on a structure are of great importance in the condition assessment process of existing structures. In this sense, this work provides a novel approach for identification of dynamic moving forces acting on a bridge structure. It seeks to find the optimal time dependent force values that minimize the difference between the computed and measured displacement and acceleration time histories for a limited number of sensor locations. The work also presents extensive experimental investigations of the developed method on real structures in operation, which consistently show that it can be successfully used on a wide range of applications: from small structures excited by rather low pedestrian forces up to the "heavy category" of a complete train passing a railway bridge. In this context, a set of particularities and limitations arising in the practical application of the method on real structures are also discussed.

There are forces at work whenever you throw a ball, run up the stairs, or push your big brotheroff the couch. Want to learn more about the forces around you? Read and find out!

Making Things Move: Force and Motion is aligned to the Common Core State Standards for English/Language Arts, addressing Literacy.RI.2.2 and Literacy.L.2.5b. Readers are introduced to simple physics lessons in an accessible way, featuring real-world examples, in this book, which includes full-page color photographs paired with narrative nonfiction text that explain relevant concepts. This book should be paired with “Push and Pull: Understanding Force and Motion" (9781477723548) from the Rosen Common Core Readers Program to provide the alternative point of view on the same topic.

Let’s talk about the mechanics of how objects move, otherwise referred to as the Laws of Motions in action. This book will introduce the basic ideas of motion and the effects of force on the motion of objects. Are you excited to learn? Then grab a copy and start reading today!