Technology of Semiactive Devices and Applications in Vibration Mitigation





Introduction

OBJECTIVES

Civil engineering structures do not show the innovation

rate which characterizes mechanical and aerospace engineering.

There are three ingredients able to generate innovation:

the design rationale, the construction materials and

the quality process. The first ingredient has not seen much

revolution in the last century, while the second suggested

fascinating innovative solutions, but they are still under

durability examination to satisfy the long expected lifetimes

which characterize civil infrastructure components.

Therefore, certification and quality control have driven the

innovation of the last half century within the usual framework

of increasing the strength of a structure. This can be

mainly obtained by making larger and larger sections, so

that stiffer and more massive buildings result. One concentrates

here on the carrying capacity, and, hence, the

framework can be referred to as capacity design.


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