Above: Pileco D-8 diesel hammer on Vulcan Foundation Equipment's excavator mast, ready to drive below grade. Photo courtesy of Vulcan Foundation Equipment. Since we dealt with older European diesel hammers in the post Diesel Hammers: Delmag, Nilens and the Method of Analysis, let's turn to something more contemporary: Pileco diesel hammers, one of several organisations which … Continue reading Diesel Hammers: Pileco
With recent upheaval over tariffs and our long-term commercial relationship with China, one is led to wonder: is the era of the "Chimags" at an end? Or at least not what it used to be? And could another different diesel hammer be manufactured in the U.S. (yes, there are other manufacturers)? In this series we'll … Continue reading Diesel Hammers: Some Basic Thermodynamics, and the Mean Effective Pressure
This is an overview of the motion of the "standard" type of diesel fuel pump cam which is used to deliver fuel from the fuel tank to the combustion chamber of a single-acting, tubular type of diesel hammer. What are Kinematics? As defined in Seely and Ensign, "Kinematics deals with the relation between distance, time, … Continue reading The Kinematics of Diesel Fuel Pump Cams
This is another in a series of technical reports on vibratory and impact-vibration pile driving equipment. It is scheduled to be presented at the 2024 Arts and Research Conference at the University of Tennessee at Chattanooga. You can download the paper here. The abstract is as follows: Abstract: Driving piles by longitudinal vibrations has been … Continue reading Analysis of Vibratory Pile Drivers using Longitudinal and Rotational Oscillations with a Purely Plastic Soil Model
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